• 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:
    1468838 Regulating IC engines LARS COLLIN CONSULT AB 11 Feb 1974 [15 Feb 1973] 06152/74 Heading F1B [Also in Division G1] Apparatus for determining certain gases, for example the carbon monoxide, hydrocarbon and nitrogen oxides content of vehicle engine exhaust gases comprises a device for operating the fuel supply system of the engine, which is to be disengaged from the transmission, in accordance with a predetermined program to cause over a fixed period of time at least one momentary increase in fuel supply sufficient to raise the speed of the engine to a speed not exceeding the maximum value, and a gas sampling unit for connecting to the engine exhaust to collect a given fraction of the exhaust gas and to determine the certain gases in the given fraction. In the apparatus shown, the throttle pedal 28 is operated as required by an electronic control unit 29 by a compressed air motor 36 which is governed by a solenoid operated valve 37 controlled by unit 29 and fed with air from bottle 40. A given fraction of the exhaust gases from exhaust pipe 27 is collected in bladder shaped bag 31 by attachment of hose 33 to one of a series of pipes 32 which are connected to exhaust gas receiver 30 and are of accurately determined length and i.d. The exhaust gas fraction collected may be led through an absorbing indicator mixture or to analyzing equipment.
    公开号:SU990089A3
    申请号:SU742001914
    申请日:1974-02-14
    公开日:1983-01-15
    发明作者:Т.Коллин Ларс
    申请人:Ларс Коллин Консулт Аб (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to mechanical engineering, in particular to the engine industry, and in particular to methods for determining the content of toxic substances in the exhaust gases of an engine.
    A known method for determining the content of toxic substances in the exhaust gases of an engine of a vehicle with a transmission by sampling gas for a constant period of time during which the engine is subjected to a series of regime changes between idle speed and maximum increase in fuel supply, followed by deceleration to idle speed.
    The known method allows to determine the content of toxic substances with sufficient efficiency [1]. jq
    The disadvantages of the method are its complexity and duration of the process.
    The purpose of the invention is the simplification and acceleration of the process.
    This goal is achieved by the fact that, according to the method for determining the content of toxic substances in the exhaust gases of an internal engine, the wound of the vehicle is operational. Changes are made when the engine is disconnected from the vehicle transmission.
    In FIG. 1 shows the time dependence of the throttle position; in FIG. 2 - dependence of the change in the number of revolutions of the engine shaft on time; in FIG. 3 the dependence of the change in average pressure in the cylinder of the engine from time ·; in FIG. 4 - a device for implementing the proposed method.
    The method is as follows.
    For a constant period of time, pulses 1-3 of the fuel supply change are generated by changing the position of the throttle valve.
    Any pulses of 1-3 duration can be set, with the exception of those in which the engine runs at maximum speed.
    The time intervals between pulses should be longer than the deceleration time until the idle speed.
    With a change in the fuel supply, the number of revolutions of the 4-6 engine shaft changes, as well as the average pressure in the cylinder 7-9.
    The device for implementing the proposed method is equipped with a master unit 10, a device for acting on the throttle pedal 11 of the engine, with a capacity of 12 with outlet pipes 5 13 and a receiver 14 made of plastic. The host unit 10 is connected to the battery 15.
    The device for acting on the pedal 11 consists of a rod 16, 10 acting on the propulsion device 17 through the valve 18. The latter is driven by a solenoid 19, which, in turn, is controlled by a setting unit 10. 15
    Compressed air for the propulsion 17 is supplied from a cylinder 20 or from any other source.
    The tank 12 with exhaust pipes 13 is connected to the exhaust pipe 21 jo through the pipe 22 and the solenoid valve 23 with the receiver 14.
    The device operates as follows.
    The host unit 10 acts on the 25 pedal 11. control the throttle of the engine in accordance with a given program. The engine idling for a constant period of time receives a certain number of different duration of fuel supply pulses. These impulses
    Part of the exhaust gases of the engine is discharged to the receiver 14 or directly to the measuring device through a solenoid valve 23 controlled by the setting unit 10. When the intensity of the exhaust gas flow changes, the ratio of all of the volume to the volume of the part that is discharged to the receiver 14 or to the measuring device is kept constant .
    Thus, with a significant simplification and acceleration of the process by the proposed method, it is possible to determine the toxicity of substances in the exhaust gases with sufficient efficiency.
    权利要求:
    Claims (1)
    [1]
    The invention relates to mechanical engineering, in particular engine building, and specifically to methods for determining the content of toxic substances in engine exhaust gases. A known method for determining the content of toxic substances in the exhaust gases of a vehicle engine with transmission by sampling gas for a constant period of time during which the engine undergoes a series of regime changes between idling speeds and a maximum increase in fuel supply with subsequent deceleration to idle speed. The known method allows to determine the content of toxic substances with sufficient efficiency. The disadvantages of the method are its complexity and duration of the process. The purpose of the invention is to simplify and speed up the process. This goal is achieved by the fact that, according to the method for determining the content of toxic substances in the exhaust gases of the vehicle's internal engine engine, modal changes are made when the engine is disconnected from the vehicle's transmission. FIG. Figure 1 shows the dependence of the change in throttle position on time; in fig. 2 - dependence of the change in the number of revolutions of the engine shaft on time; in fig. 3 the dependence of the change in the average pressure in the engine cylinder on time; in fig. 4 - a device for realizing the proposed method. The method is carried out in the following manner. For a constant period of time, pulses 1–3 changes in fuel supply are produced by changing the position of the throttle valve. It is possible to produce any pulses of 1–3 duration in duration, except for those at which the engine is running at maximum speed. The time intervals between pulses should be longer than the time of deceleration to idle speed. With the change in fuel supply, the number of revolutions 4-6 of the engine shaft changes, as well as the average pressure in the cylinder 7-9. A device for carrying out the proposed method is provided with a driver unit 10, a device for operating the engine throttle pedal 11 with a capacity of 12 with outlet tubes 13 and a receiver 14 made of plastic. The driver unit 10 is connected to the battery 15. The device for acting on the pedal 11 consists of a rod 16 acting on the propeller 17 through a valve 18. The latter is driven by a solenoid 19, which, in turn, is controlled by the driver unit 10. Compressed air for the mover 17, it is supplied from a balloon 20 or from some other source. The container 12c is discharged by pipes 13 and is connected to the exhaust pipe 21 through a pipe 22 and a solenoid valve 23 with a receiver 14. The device operates as follows. The driver unit 10 acts on the pedal 11. controlling the engine throttle valve in accordance with a predetermined program. An engine operating in idle mode for a constant period of time receives a certain amount: a mixture of fuel pulses of different duration. These pulses should not be of such a duration that the engine will operate at maximum speed for any period of time, or under the conditions under which it operates at constant speed. A portion of the engine exhaust gases is diverted to the receiver 14 or directly to the measuring device through a solenoid valve 23 controlled by the driver unit 10. When the exhaust flow rate changes. the gas ratio of the total volume to the volume of the part that goes to the receiver 14 or to the measuring fixture is kept constant. Thus, with a significant simplification and acceleration of the process by the proposed method, it is possible to determine the toxic content of substances in exhaust gases with sufficient efficiency. Formula of the invention. during which the engine is subjected to a series of regime changes between the idling speed and the maximum increase in fuel supply with a subsequent slowdown to idle speed, which is characterized by the fact that, in order to simplify and speed up the process, the regime changes are performed when the engine is disconnected from the vehicle's transmission. Information sources taken into account during the examination 34, 1973, No. 3, pp.84-91.
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    同族专利:
    公开号 | 公开日
    FR2217544B1|1978-09-15|
    SE370562B|1974-10-21|
    GB1468838A|1977-03-30|
    AU6520574A|1975-08-07|
    ZA74850B|1975-05-28|
    DE2407031C3|1980-04-03|
    IT1002869B|1976-05-20|
    DK141564B|1980-04-21|
    NO148271B|1983-05-30|
    FI57648C|1980-09-10|
    RO64331A|1979-07-15|
    JPS5031833B2|1975-10-15|
    DE2407031B2|1979-07-26|
    FR2217544A1|1974-09-06|
    DD111246A5|1975-02-05|
    CH590468A5|1977-08-15|
    FI57648B|1980-05-30|
    JPS49126385A|1974-12-03|
    NL7401747A|1974-08-19|
    IL44146D0|1974-05-16|
    DK141564C|1980-10-06|
    IL44146A|1976-10-31|
    AT356947B|1980-06-10|
    NO740472L|1974-08-16|
    NO148271C|1983-09-07|
    ATA117474A|1979-10-15|
    CA1006714A|1977-03-15|
    BE810767A|1974-05-29|
    CS194701B2|1979-12-31|
    BR7401126D0|1974-11-05|
    DE2407031A1|1974-08-22|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    JPS5032924U|1973-07-23|1975-04-10|
    SE403835B|1977-01-13|1978-09-04|Collin Consult Ab Lars|PROCEDURE AND DEVICE FOR WHICH ANALYSIS OF EXHAUST FROM VEHICLE ENGINES RECEIVE THE WORLD THAT IS COMPARABLE REPRESENTATIVES FOR VARIOUS ENGINES|
    SE414836B|1977-11-02|1980-08-18|Collin Consult Ab Lars|METHOD OF PROCEDURES FOR ANALYSIS OF EXHAUST GAS FROM A COMBUSTION ENGINE ASTADKOMMA CONDITIONING REPRESENTATIVE FOR A PREVIOUS TRAFFIC SITUATION|
    EP0077865B1|1981-10-26|1986-01-29|Lars Collin Consult AB|Method and device for the completion of an operational test, especially of an exhaust gas emission test of an internal-combustion engine|
    JPH07104233B2|1987-11-18|1995-11-13|株式会社堀場製作所|Gas sampling device|
    DE9107156U1|1991-06-11|1991-07-25|Hermann Electronic Inh. Horst Hermann, 8502 Cadolzburg, De|
    JP4222101B2|2003-05-16|2009-02-12|トヨタ自動車株式会社|Gas measuring method and gas measuring device|
    CN102494897A|2011-10-28|2012-06-13|奇瑞汽车股份有限公司|Exhaust gas sampling switching device and control method for same|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE7302112A|SE370562B|1973-02-15|1973-02-15|
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