• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    An exhaust heat recovery apparatus comprising: a motor (1) comprising at least one oil sump (2); exhaust pipes (51, 52) through which exhaust gas discharged from the engine (1) passes; a catalytic converter (6) part or all of which is provided at the front of the engine (1) in a vehicle for cleaning the exhaust gas; and an exhaust heat recovery device (7) comprising a heat transfer fluid and exchanging heat between the coolant and the exhaust gas, wherein the exhaust heat recovery device (7) is provided for an intermediate position in the exhaust pipe (52) downstream of the catalytic converter (6) and a part of the exhaust heat recovery device (7) is provided at least below a base portion of the housing of oil (2).
    公开号:FR3062164A1
    申请号:FR1850368
    申请日:2018-01-17
    公开日:2018-07-27
    发明作者:Ryutaro Shinohara
    申请人:Suzuki Motor Co Ltd；
    IPC主号:
    专利说明:

    Holder (s):
    Applicant (s): SUZUKI MOTOR CORPORATION - JP.
    SHINOHARA RYUTARO.
    SUZUKI MOTOR CORPORATION.
    ® Agent (s): CABINET PLASSERAUD.
    ® EXHAUST HEAT RECOVERY APPARATUS.
    FR 3 062 164 - A1 (© An exhaust heat recovery device is provided, comprising: an engine (1) comprising at least one oil pan (2); exhaust pipes (51, 52) through which passes an exhaust gas discharged from the engine (1); a catalytic converter (6) part or all of which is provided at the front of the engine (1) in a vehicle for cleaning the exhaust gas; and a device heat recovery device (7) comprising a heat transfer fluid and exchanging heat between the heat transfer fluid and the exhaust gas, in which the exhaust heat recovery device (7) is provided in an intermediate position in the exhaust pipe (52) downstream of the catalytic converter (6) and a part of the exhaust heat recovery device (7) is provided at least below a base portion of the oil pan (2).

    The present invention relates to an exhaust heat recovery device which transmits heat in an exhaust gas from a vehicle engine to an engine heat transfer fluid.
    Patent document 1 discloses a structure in which an exhaust heat recovery device is arranged inside a floor tunnel.
    Patent document 1: JP 2016-121 557 A.
    However, since the exhaust heat recovery device described in patent document 1 is arranged inside the floor tunnel, an exhaust gas channel in a vehicle with a front engine becomes long and an exhaust gas temperature flowing through the exhaust heat recovery device decreases, which reduces the amount of heat recovery. Reducing the time to warm up an engine therefore tends to be insufficient.
    In addition, since a coolant channel becomes long, the weight of the coolant increases, the increase in the temperature of the cooling water is probably delayed and the reduction of the time to warm up an engine tends to be insufficient.
    In addition, since the heat radiating area of a cooling water channel is large, the amount of heat recovered by the cooling water is probably released into the atmosphere before being used to heat a engine, and reducing the time to warm up an engine tends to be insufficient.
    In addition, since the exhaust heat recovery device is arranged inside the floor tunnel, cabin space is reduced.
    The present invention is developed to solve the above problems. An object of the present invention is to provide an exhaust heat recovery device capable of increasing cabin space while reducing time to warm up an engine.
    To solve the above problems, the present invention provides an exhaust heat recovery device provided with an engine comprising at least one oil pan, an exhaust pipe through which passes a discharged exhaust gas of the engine, a catalytic converter, part or all of which is provided at the front of the engine in a vehicle for cleaning the exhaust gas, and an exhaust heat recovery device comprising a heat transfer fluid and exchanging heat between the heat transfer fluid and the exhaust gas, in which the exhaust heat recovery device is provided at an intermediate position in the exhaust pipe downstream of the catalytic converter and part of the heat recovery device d The exhaust is provided at least below a base portion of the oil pan.
    The heat recovery device according to the present invention may further comprise the following characteristics, taken alone or in combination:
    - a part of the exhaust heat recovery device is provided between a lower surface of at least the base portion of the oil pan and a plane comprising a lower end position of a suspension frame;
    - the exhaust heat recovery device is provided with an inlet pipe and an outlet pipe for the heat transfer fluid, and the inlet pipe and the outlet pipe are provided above a plane comprising the lower end position of the suspension frame;
    - the outlet pipe is connected to an exhaust water pipe arranged between an engine radiator and a water pump via a pipe body;
    - the pipe body is arranged between the exhaust water pipe and the catalytic converter;
    - the exhaust water from a heating radiator has entered the inlet pipe;
    - The exhaust heat recovery device comprises a first channel through which the heat transfer fluid and a second channel, provided at a peripheral portion of the first channel, through which passes the exhaust gas, and the second channel is disposed between the first channel and the oil pan;
    - the exhaust pipe includes a folded portion which is folded from below the base portion of the oil pan to the top of a drive shaft and a rear end of the first channel vehicle is located closer to the front side of the vehicle as the folded portion;
    - the rear end of the vehicle of the first channel is located closer to the front side of the vehicle than the front end of the vehicle of an engine torsion bar of the engine.
    Since the exhaust gas temperature increases, the amount of heat transfer fluid storage decreases and the heat radiation area of the heat transfer fluid channel decreases, it is possible to reduce the time to warm up an engine and d '' further increase cabin space.
    The present invention will be described in detail below with reference to the accompanying drawings in which:
    Figure 1 is a perspective view of a lower part of an engine of a vehicle viewed diagonally from below;
    Figure 2 is a perspective view of an exhaust heat recovery device and a radiator for the front of the vehicle;
    Figure 3 is a conceptual diagram of the exhaust heat recovery device for the right side of the vehicle;
    Figure 4 is a conceptual diagram of the exhaust heat recovery apparatus for the side face of the engine;
    Figure 5 is a bottom view of the exhaust heat recovery device for the bottom surface side of the engine;
    Figure 6 is a conceptual diagram of the exhaust heat recovery device for the front of the vehicle;
    Figure 7 is an enlarged plan view of the exhaust heat recovery device for the top surface;
    Figure 8 is a conceptual cross-sectional view of the exhaust heat recovery device for the side face;
    Figure 9A is a conceptual cross-sectional view along a line A-A in Figure 8; Figure 9B is a modification of Figure 9A; and Figure 9C is another modification of Figure 9A;
    Figure 10 is a block diagram illustrating the engine provided with the exhaust heat recovery device and a flow of a heat transfer fluid.
    An embodiment of the present invention will be described in detail below with reference to the drawings of Figures 1 to 10.
    Figures 1 to 6 show an engine and an exhaust heat recovery device provided around the engine. Figure 1 illustrates the bottom of the engine 1 for a side view and an oil pan 2 is provided at the bottom. The reference number 3 indicates a flywheel provided on the side face of the engine 1. A radiator 4 which sends a heat transfer fluid to the engine 1 is provided at the front of the engine 1. An exhaust pipe 5i to which a gas engine exhaust 1 is sent is provided behind the radiator 4 and a housing 6 containing a catalytic converter is provided at an intermediate position in the exhaust pipe 5i. A tubular exhaust heat recovery device 7 is provided downstream of the catalytic converter housing 6 from the front to the rear of the vehicle. An exhaust pipe 52 is connected downstream of the exhaust heat recovery device 7. A silencer (not shown) is further connected downstream of the exhaust pipe 52.The exhaust pipe 52 passes over a suspension frame 8 and is formed to be curved in the shape of an inverted U above the suspension frame 8.
    The suspension frame 8 is arranged behind the engine 1. Left and right wheels are provided on the left and right sides of the suspension frame 8 by means of suspension devices (not shown).
    The exhaust heat recovery device 7 is arranged near the underside of the oil pan 2 so as to pass below a base portion 2a of the oil pan 2 in the longitudinal direction of the bodywork. vehicle. It is arranged to efficiently radiate heat from the exhaust gas to the oil pan 2. One of the left and right sides on the lower side of the oil pan 2 is formed in a concave portion 2b and the device heat recovery exhaust 7 is arranged to pass through the position of the concave portion 2b. The exhaust heat recovery device 7 is disposed above a plane comprising the lower end position of the suspension frame 8, that is to say at a position above a horizontal plane H which is an extension of the lower surface of the suspension frame 8 (cf. FIG. 4).
    The exhaust heat recovery device 7 consists of an outer cylinder 7a composed of a tubular recovery device body 70 and an inner cylinder 7b disposed inside the outer cylinder 7a and concentrically therewith, as shown in Figure 8. The recovery device body 70 is disposed substantially horizontally in the longitudinal direction of the vehicle body in a side view, with a portion thereof on the side of catalytic converter housing 6 tilting diagonally upwards. As shown in Figure 7, the recovery device body 70 is arranged so that a portion thereof on the side of the hanger frame 8 faces a left side diagonally in a plan view.
    The exhaust heat recovery device 7 consists of an exhaust gas channel 71 formed inside the outer cylinder 7a and a passage of heat transfer fluid (coolant) 72 having a certain compound length. of the inner cylinder 7b which is arranged concentrically with the outer cylinder 7a, as shown in Figure 9A. Heat transfer fins 73 are provided radially on a circumferential surface of the inner cylinder 7b between the outer cylinder 7a and the inner cylinder 7b. The heat transfer fins 73 are provided over a certain length L in the axial direction between the exhaust gas channel 71 and the heat transfer fluid passage 72.
    An inlet pipe 74 into which the coolant is introduced and an outlet pipe 75 from which the coolant is discharged are connected to the front and rear side faces of the coolant passage 72. The inlet pipe 74 and the coolant pipe outlet 75 enter and exit the side face of the recovery device body 70. The inlet pipe 74 is provided downstream of the recovery device body 70 and the outlet pipe 75 is provided upstream of the recovery device body 70.
    The inlet pipe 74 is intended to connect the exhaust heat recovery device 7 and a heating radiator, as will be described below. The outlet pipe 75 is intended to connect the exhaust heat recovery device 7 and a water inlet pipe or a radiator outlet pipe, as will be described below.
    Furthermore, as shown in FIG. 7, the outlet pipe 75 is preferably provided on one side of the alternator (right side of the vehicle) relative to a central line of the exhaust heat recovery device 7 in a top view of the vehicle. This reduces the distance from the outlet pipe 75 and the radiator 4 to an exhaust water pipe 76 and thereby further reduces the cooling water path which moves back and forth between the engine. 1 and the exhaust heat recovery device 7.
    It does not matter which of the inlet pipe 74 or the outlet pipe 75 is arranged on the front side of the vehicle in the longitudinal direction of the vehicle.
    Note that, with regard to the exhaust gas channel 71 and the heat transfer fluid passage 72, the inner cylinder 7b which is the heat transfer fluid passage 72 can be disposed at an eccentric position of the outer cylinder 7a which is the recovery device body 70, as shown in Figure 9B. In addition, a polygonal heat transfer passage 722 can be used, as shown in Figure 9C.
    As shown in Figure 8, the exhaust heat recovery device 7 is configured so that a flow X of the exhaust gas from the exhaust gas passage 71 of the body of the recovery device 70 is opposite to a flow Y of the heat transfer fluid from the heat transfer fluid passage 72 to allow the heat transfer fins 73 to effectively cool the exhaust gas.
    FIG. 10 illustrates a flow of the coolant which cools the engine L The coolant heated by the cooling of the engine 1 is sent to a heater (heating radiator) 10 to heat the heater 10 and it is supplied to the device. exhaust heat recovery 7. The heat transfer fluid heated with the exhaust gas coming from the exhaust heat recovery device 7 joins the heat transfer fluid cooled by the radiator 4, and it is supplied to the engine 1 by a heat pump. water 11. The exhaust heat recovery device 7 is connected to the water pump 11 via the exhaust water pipe (radiator outlet pipe 41 or water inlet pipe 42) 76 connected to the outlet pipe 75.
    The heat transfer fluid from the engine 1 is also sent to a thermal valve 12, it is supplied to a CVT (continuously variable transmission) cooler 13, then it is supplied to the engine 1 via the water pump 11.
    According to the embodiment described above, the temperature of the exhaust gas in the exhaust pipe below the base portion of the oil pan 2 near the catalytic converter housing 6 containing the catalytic converter is about 150-200 ° C higher than the temperature of the exhaust gas in the exhaust pipe below the floor tunnel. Therefore, the arrangement of the exhaust heat recovery device 7 below the base portion of the oil pan 2 instead of below the floor tunnel gives a greater temperature difference compared to the heat transfer fluid and provides a greater amount of exhaust heat recovery. In addition, the arrangement of the exhaust heat recovery device 7 above the plane comprising the lower end position of the suspension frame 8, that is to say the horizontal plane which is an extension of the surface lower of the suspension frame 8, allows the exhaust heat recovery device 7 to be brought closer to the oil sump 2 and to increase the amount of heat radiation from the exhaust gas to the oil sump. It is therefore possible to increase the amount of heat recovered by the heat transfer fluid and to reduce the time it takes to warm up the engine.
    According to the embodiment described above, the exhaust heat recovery device 7 is arranged below the base portion of the oil pan 2 near the engine 1, which reduces the heat transfer fluid channel 72 between the engine 1 and the exhaust heat recovery device 7.
    It is therefore possible to reduce the volume of the heat transfer fluid contained therein. This will reduce the time it takes for the heat transfer fluid to rise, make it easier to heat the heat transfer fluid, reduce the time it takes to warm up the engine, and also reduce weight.
    It is further possible to reduce the heat radiating area of the heat transfer fluid channel 72, reduce the amount of heat dissipation, and thereby prevent the amount of heat recovered by the heat transfer fluid from being emitted. in the atmosphere before being used to heat the engine. This will reduce the time it takes to warm up the engine, reduce the load on the water pump 11 and prevent deterioration of the engine output.
    1.
    The arrangement of the exhaust heat recovery device 7 below the floor tunnel reduces the cabin space. Since the present invention does not have the exhaust heat recovery device 7 below the floor tunnel, this does not reduce the cabin space. This makes it possible to increase cabin space and improve passenger comfort.
    In addition, the degree of freedom of design of the floor tunnel and its periphery is increased.
    Since the exhaust heat recovery device 7 is arranged above the horizontal plane H comprising the lower end portion of the suspension frame 8, it is possible, even in the event of unforeseen circumstances, to prevent the frame suspension 8 near the exhaust heat recovery device 7 does not touch the ground first, so as not to cause the exhaust heat recovery device 7 to touch the ground. This prevents damage to the exhaust heat recovery device 7.
    Since the exhaust heat recovery device 7 is provided with the inlet pipe 74 and the outlet pipe 75 of the heat transfer fluid, and since the inlet pipe 74 and the outlet pipe 75 are provided au- above the plane comprising the lower end position of the suspension frame 8, it is possible to prevent the suspension frame 8 from touching the ground first so that the inlet pipe 74 and the outlet pipe 75 provided in the exhaust heat recovery device 7 does not touch the ground. This prevents damage to the exhaust heat recovery device 7.
    Since the outlet pipe 75 is connected to the exhaust water pipe 76 disposed between the radiator 4 and the water pump 11 of the engine 1 via a pipe body (not shown), the heat transfer fluid (cooling water) from the outlet pipe 75 does not pass through the radiator 4 during the operation to heat the engine. Consequently, the heat transfer fluid is not cooled by the radiator 4. In addition, since the distance between the outlet pipe 75 and the water pump 11 is small, the heat transfer fluid (cooling water) can immediately reach the pump water 11 while maintaining the amount of heat recovered. This reduces the time it takes to warm up the engine.
    Since the pipe body is disposed between the exhaust water pipe 76 and the catalytic converter housing 6, if the pipe body is not disposed between the exhaust water pipe 76 and the catalytic converter housing 6, the exhaust water pipe 76 can hardly receive radiant heat from the catalytic converter, and the temperature of the cooling water passing through the exhaust water pipe 76 therefore increases practically not. After the end of the operation to warm up the engine, if there is no pipe body disposed between the exhaust water pipe 76 and the catalytic converter housing 6, the exhaust water coming from the radiator 4 can prevent a temperature increase by the catalytic converter. This reduces the volume of the radiator 4 and sufficiently protects the engine 1.
    Since the exhaust water from the heater (heating radiator) 10 has entered the inlet pipe 74, it is possible to reduce the amount of heat recovered in the cooling water, compared to a case in which the cooling water is not cooled by the heater (heating radiator) 10.
    Consequently, the heat protection performance (heat recovery performance required after the end of the operation to heat the engine) increases.
    The exhaust heat recovery device 7 is connected between the inlet pipe 74 and the outlet pipe 75. H is provided with the first channel 72A as a coolant passage 72 provided in the inner cylinder 7b through which the heat transfer fluid and the second channel 71A pass as an exhaust gas channel 71 provided between the inner cylinder 7b and the outer cylinder 7a of the exhaust heat recovery device 7. At least the side of the casing oil 2 is provided near the second channel 71 A. This achieves the following effects.
    Since the conventional exhaust heat recovery device described in patent document 1 has a structure in which the cooling water channel is disposed on the outer circumferential side of the heat exchange unit, the radiant heat cooling water at a temperature of about 90 ° C is transmitted to the oil pan 2. The structure of the exhaust heat recovery device 7 of the present invention is a structure in which the gas channel d exhaust 71 on the outer cylinder side 7a, which is the second channel 71 A, is disposed on the outer circumferential side of the cooling water passage 72 as the heat exchange unit which is the first channel 72A . Therefore, the radiant heat of a high temperature exhaust gas between about 300 and 500 ° C is transmitted to the oil pan 2.
    The arrangement of the exhaust heat recovery device 7 below the oil pan base 2a in the present invention instead of below the floor tunnel therefore makes it possible to recover higher temperature heat in the engine oil.
    This increases the amount of heat recovered from the engine oil.
    The exhaust pipe 52 is provided with a folded portion 5a which is folded from below the base portion of the oil pan 2a towards the top of the drive shaft. The rear end of the vehicle of the first channel 72 is located closer to the front side of the vehicle than the inclined portion. This has the following effects.
    The interior of the exhaust pipe below the base portion of the oil pan 2a has a shape allowing the accumulation of condensed water. If the first channel 72A on the inner cylinder side 7b of the present invention is the coolant channel of the cooling water and the second channel 71A on the outer cylinder side 7a is the exhaust gas channel 71, the heat exchange between the first channel 72A and the second channel 71A is not affected by condensed water or ice, which is solidified condensed water. A high heat exchange efficiency can therefore be maintained.
    Since the rear end of the vehicle of the first channel 72A is located closer to the front side of the vehicle than the front end of a vehicle engine torsion bar, it is possible to prevent any problem of thermal deformation of the engine torsion bar.
    In the embodiment described above, the cooling water is used as the heat transfer fluid. However, any liquid other than water can also be used. A gas can also be used. The embodiment described above is not limited to a gasoline engine, but it is also applicable to a diesel engine.
    The inlet pipe 74 is preferably provided on the transmission side (left side of the vehicle) relative to the center line of the exhaust heat recovery device 7 in a top view of the vehicle, as shown in Figure 7.
    Since the distance between the inlet pipe 74 and the heating radiator 10 can be reduced, the path in which the cooling water flows back and forth between the engine 1 and the exhaust heat recovery device 6 can be shortened.
    The outlet pipe 75 is preferably provided on the alternator side (right side of the vehicle) relative to the center line of the exhaust heat recovery device 7 in a top view of the vehicle, as shown in Figure 7.
    Since the distance between the outlet pipe 75 and the exhaust water pipe 76 from the radiator 4 can be reduced, the path in which the cooling water flows back and forth between the engine 1 and the exhaust heat recovery device 7 can be further shortened.
    It does not matter which of the inlet pipe 74 or the outlet pipe 75 is arranged on the front side of the vehicle in the longitudinal direction of the vehicle.
    Note that the outlet pipe 75 is disposed on the front side of the vehicle, which is preferable to further shorten the path in which the cooling water moves back and forth between the engine 1 and the recovery device exhaust heat 7.
    In addition, a thermoelectric element can be provided. It is possible to generate more electricity using exhaust heat through the thermoelectric element.
    Note that the thermoelectric element can be the exhaust heat recovery device 7, which is a heat transmission unit, or the oil pan 2, which is a heat reception unit. In addition, the invention can obviously be implemented by making appropriate modifications without departing from the technical scope of the present invention.
    Legend:
    Engine
    Oil pan
    Steering wheel
    Radiator
    Radiator outlet pipe
    Water inlet hose
    51.52 Exhaust pipe
    Catalytic converter housing
    Exhaust heat recovery device
    7a Outer cylinder 7b Inner cylinder 8 Suspension frame 10 Heater 5 11 Water pump 70 Recovery device body 71 Exhaust channel 71A Second channel 72, 72 2 Heat transfer fluid 10 72A First channel 73 Heat transfer fins 74 Inlet pipe 75 Outlet pipe 76 Exhaust water pipe
    权利要求:
    Claims (9)
    [1" id="c-fr-0001]
    1. Exhaust heat recovery device, characterized in that it comprises:
    an engine (1) comprising at least one oil pan (2);
    an exhaust pipe (5i, 52) through which an exhaust gas discharged from the engine (1) passes;
    a catalytic converter (6), part or all of which is provided at the front of the engine (1) in a vehicle for cleaning the exhaust gas; and an exhaust heat recovery device (7) comprising a heat transfer fluid and exchanging heat between the heat transfer fluid and the exhaust gas, characterized in that the exhaust heat recovery device (7) is provided at an intermediate position in the exhaust pipe (52) downstream of the catalytic converter (6) and a part of the exhaust heat recovery device (7) is provided at least below a base portion oil pan (2).
    [2" id="c-fr-0002]
    2. An exhaust heat recovery device according to claim 1, characterized in that a part of the exhaust heat recovery device (7) is provided between a lower surface of at least the base portion of the casing. oil (2) and a plane comprising a lower end position of a suspension frame (8).
    [3" id="c-fr-0003]
    3. Exhaust heat recovery device according to claim 2, characterized in that the exhaust heat recovery device (7) is provided with an inlet pipe (74) and an outlet pipe (75) of the heat transfer fluid, and the inlet pipe (74) and the outlet pipe (75) are provided above a plane comprising the lower end position of the suspension frame (8).
    [4" id="c-fr-0004]
    4. Exhaust heat recovery device according to claim 3, characterized in that the outlet pipe (75) is connected to an exhaust water pipe (76) disposed between a radiator (4) of the engine ( 1) and a water pump (11) via a pipe body.
    [5" id="c-fr-0005]
    5. Exhaust heat recovery device according to claim 4, characterized in that the pipe body is disposed between the exhaust water pipe (76) and the catalytic converter (6).
    [6" id="c-fr-0006]
    6. Exhaust heat recovery device according to any one of claims 3 to 5, characterized in that the exhaust water from a heating radiator (10) is entered into the inlet pipe (74 ).
    [7" id="c-fr-0007]
    7. exhaust heat recovery device according to any one of claims 3 to 6, characterized in that the exhaust heat recovery device (7) comprises a first channel (72A) through which the heat transfer fluid passes. and a second channel (71 A), provided at a peripheral portion of the first channel (72A), through which the exhaust gas passes, and the second channel (71 A) is disposed between the first channel (72A) and the casing oil (2).
    [8" id="c-fr-0008]
    8. Exhaust heat recovery device according to claim 7, characterized in that the exhaust pipe (5i, 52) comprises a folded portion which is folded from below the base portion of the oil pan ( 2) up a drive shaft and a rear end of the first channel vehicle (72A) is located closer to the front side of the vehicle than the folded portion.
    [9" id="c-fr-0009]
    9. An exhaust heat recovery device according to claim 7 or 8, characterized in that the rear end of the vehicle of the first channel (72A) is located closer to the front side of the vehicle than the front end of the vehicle d '' a motor torsion bar of the motor (1).
    1/7
    2/7
    类似技术:
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    同族专利:
    公开号 | 公开日
    DE102018100356A1|2018-07-26|
    JP6834521B2|2021-02-24|
    FR3062164B1|2020-11-27|
    JP2018119414A|2018-08-02|
    CN108343495A|2018-07-31|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    JP4281789B2|2006-12-06|2009-06-17|トヨタ自動車株式会社|Exhaust heat recovery device|
    JP2008255944A|2007-04-06|2008-10-23|Toyota Motor Corp|Warm up device in engine|
    JP6164568B2|2013-09-30|2017-07-19|スズキ株式会社|Exhaust system heat exchanger layout|
    JP6245163B2|2014-12-24|2017-12-13|トヨタ自動車株式会社|Waste heat recovery unit structure|
    JP6250576B2|2015-03-19|2017-12-20|株式会社ユタカ技研|Engine and exhaust system|
    EP3306047B1|2015-05-27|2019-03-13|Nissan Motor Co., Ltd.|Waste heat recovery device|CN111601773A|2018-01-15|2020-08-28|国立大学法人东北大学|ITO particles, dispersion liquid, method for producing ITO particles, method for producing dispersion liquid, and method for producing ITO film|
    KR20200060898A|2018-11-23|2020-06-02|현대자동차주식회사|Device for preventing dilution of engine oil|
    法律状态:
    2018-11-29| PLFP| Fee payment|Year of fee payment: 2 |
    2019-11-28| PLFP| Fee payment|Year of fee payment: 3 |
    2020-11-30| PLFP| Fee payment|Year of fee payment: 4 |
    2021-12-17| PLFP| Fee payment|Year of fee payment: 5 |
    优先权:
    申请号 | 申请日 | 专利标题
    JP2017009431A|JP6834521B2|2017-01-23|2017-01-23|Exhaust heat recovery device|
    JP2017009431|2017-01-23|
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