Actuator safety apparatus

专利摘要:
SUMMARY OF THE INVENTION An object of the present invention is to provide a safety device for an actuator for operating a turbocharger waste gate valve that can prevent damage to the diaphragm due to a higher than normal air pressure when air pressure is applied to the actuator for operation of the waste gate valve of the turbocharger. It is. To this end, the present invention is divided into a housing and a space in the housing, one side of the diaphragm to form a pressure chamber in which compressed air enters and communicates with the air tank side, and a return spring for the diaphragm in the pneumatic action direction and In the actuator for operation of the turbocharger waste gate valve consisting of an operating rod, one end is fixed to the diaphragm and the other end is connected to the waste gate valve side of the turbocharger, The pressure chamber is characterized in that the check valve for discharging the air in the pressure chamber to the outside when the pressure is formed above the reference value is provided in the housing.
公开号:KR20030029682A
申请号:KR1020010061784
申请日:2001-10-08
公开日:2003-04-16
发明作者:임재필
申请人:현대자동차주식회사；
IPC主号:

专利说明:

Actuator safety apparatus for turbocharged waste gate valve operation
[16] The present invention relates to a structural improvement for increasing durability of an actuator used to operate a waste gate valve of a turbocharger.
[17] If air is charged to the engine at a pressure higher than atmospheric pressure, the engine can charge a large amount of air even in the same engine, and accordingly, increasing the injection amount of the fuel can improve the engine output. A turbocharger is used to rotate a turbine by using flowing energy, and to suck and pressurize air through a blower connected to a rotating shaft to send the cylinder to a cylinder.
[18] In addition, a waste gate valve device 2 is provided in the turbocharger 1 as shown in FIG.
[19] The waste gate valve 5, which operates to open and close the bypass passage 4, which bypasses the turbine 3 and guides exhaust gas, is operated by a diaphragm actuator 6, and the actuator 6 It is connected to the waste control valve 8 via the pipe 7, and is connected to the side of the air tank 9 for storing compressed air for braking the vehicle again.
[20] The waste gate valve 5 configured as described above blocks the bypass passage 4 during the low speed operation of the engine. When the opening amount of the throttle valve is increased by stepping on the accelerator pedal 17, the electronic control device 11 performs the waste control valve ( 8), the air in the pressure chamber 12 of the actuator 6 is discharged through the air opening pipe 13 of the waste control valve 8, and the return spring 14 of the actuator 6 is released by air discharge. ) Pushes the diaphragm 15 so that the actuating rod 16 moves to move the waste gate valve 5 in the closing direction so that the exhaust gas passes through the turbine 3 without being bypassed. It will be improved.
[21] However, since the actuator 6 for operating the waste gate valve 5 uses the diaphragm 15 which is a thin rubber film, the following problems are raised.
[22] The air pressure applied to the actuator 6 for the operation of the waste gate valve 5 is 0 to 2 bar to control the air-fuel ratio over the entire operation section of the full load or the partial load, and the air pressure applied from the air pressure regulator 10 High pressures of 2.2 bar to 2.5 bar, even 3 bar or more, are applied to the pressure chamber 12 of the actuator 6 due to sudden acceleration and deceleration of the vehicle or the deterioration of the air pressure regulator 10, so that the diaphragm 15 cannot receive pressure. Winning and tearing frequently occur, which leads to increased maintenance costs and deterioration of the turbocharger engine due to air leakage.
[23] Accordingly, the present invention has been proposed in view of the above-mentioned point, and its object is to provide a turbocharger capable of preventing damage to the diaphragm due to higher than normal air pressure when the air pressure acts on the actuator to operate the waste gate valve of the turbocharger. The present invention provides a safety device for an actuator for operating a waste gate valve.
[24] In order to achieve the above object, the present invention divides the housing and the space in the housing, one side of which is connected to the air tank side to form a pressure chamber through which compressed air enters and exits the diaphragm with respect to the pneumatic action direction. In the actuator for operating the turbocharger waste gate valve consisting of a return spring which is elastic and one end is fixed to the diaphragm and the other end is connected to the waste gate valve side of the turbocharger,
[25] The pressure chamber is characterized in that the check valve for discharging the air in the pressure chamber to the outside when the pressure is formed above the reference value is provided in the housing.
[1] 1 is a view showing the safety device of the actuator for operating the turbocharger waste gate valve according to the present invention
[2] 2 is a view showing an open operation state of the in-phase safety device
[3] 3 is a view showing an actuator for operating a conventional turbocharged waste gate valve
[4] ※ Explanation of codes for main parts of drawing
[5] 1: turbocharger 2: waste gate valve device
[6] 5: waste gate valve 6A: actuator
[7] 7 pipe 9: air tank
[8] 10 pressure regulator 12 pressure chamber
[9] 14: return spring 15: diaphragm
[10] 16: operating rod 33: housing
[11] 35 check valve 36 retainer
[12] 37: valve seat 38: ball valve
[13] 39: air distribution hole 40: support plate
[14] 41: spring 42: connecting string
[15] 43,44: hole
[26] Hereinafter, the configuration of the present invention will be described with reference to the accompanying drawings.
[27] 1 is a view showing the safety device of the actuator for the operation of the turbocharger waste gate valve according to the present invention, Figure 2 is a view showing the operating state of the in-phase safety device.
[28] What has been described in the prior art has been described using the same reference numerals.
[29] Reference numeral 6A is an actuator of the present invention and includes a housing 33 connected to the air tank 9 side via a pipe 7.
[30] In the housing 33, a diaphragm 15 formed of a silicone rubber material is provided so as to partition the internal space. The one side space, that is, the space connected to the pipe 7, is a pressure chamber 12 in which air pressure acts. A return spring 14 is provided in the space 12a opposite the pressure chamber 12 so as to sandwich the diaphragm 15 with respect to the pneumatic action direction.
[31] One end of the actuating rod 16 is fixed to the diaphragm 15, and the other end of the actuating rod 16 is connected to the waste gate valve 5 side.
[32] In addition, a check valve 35 is installed on the housing wall of the pressure chamber 12 as a safety device, and the check valve 35 has a retainer 36 fixed to the housing 33 and an inner and outer portions of the housing 33. Through the valve seat 37, the ball valve 38, the air distribution hole 39 perforated in the retainer 36, the support plate 40 of the ball valve 38, the ball through the support plate 40 Compression spring 41 for applying a force to close the valve 38 to the valve seat 37, and a connecting strap 42 for connecting the ball valve 38 and the diaphragm 15.
[33] In this case, the reference numerals 43 and 44 are holes through which the connecting string 42 is drawn out, and the holes 44 when the support plate 40 is omitted may also be used for air discharge.
[34] The operation of the present invention as described above will be described below.
[35] When the compressed air enters the pressure chamber 12 from the air tank 9 through the pipe 7, the diaphragm 15 swells. As a result, the volume of the pressure chamber 12 is increased and the diaphragm 15 expands while compressing the return spring 14 so as to move the operation rod 16 so that the waste gate valve 5 opens the bypass passage 4. do.
[36] However, when the pressure regulator 10 fails, such as a problem in the air pressure control, and a pressure higher than the reference pressure of 2 bar or more acts on the pressure chamber 12, the amount of swelling of the diaphragm 15 is increased, thereby loosening the connection string. As the 42 is pulled tight, the ball valve 38 is pulled out.
[37] In this way, when the ball valve 38 is pulled through the connecting string 42 in conjunction with the expansion of the diaphragm 15, the spring 41 is lowered while opening the valve seat 37, the pressure chamber 12 Air is discharged out of the housing 33 through the communication hole 39 and the valve seat 37 is to lower the internal pressure.
[38] When the internal pressure in the pressure chamber 12 is normalized in this manner, the diaphragm 15 is pushed up by the elastic force of the return spring 14, and the connecting string 42 is loosened again.
[39] When the connecting strap 42 is loosened, the pulling force of the ball valve 38 is removed so that the ball valve 38 comes into close contact with the valve seat 37 by the spring force of the spring 41 to prevent further release of air. Will be done.
[40] As described above, the present invention provides a check valve as a safety device in the actuator housing, and when a high air pressure above the reference value is applied to the diaphragm, the check valve which works in conjunction with the diaphragm is opened to immediately relieve the internal pressure. Maintenance costs can be reduced by preventing damage, and air leakage due to the diaphragm damage of the actuator can be prevented, thereby reducing the engine output.

权利要求:
Claims (4)
[1" claim-type="Currently amended] A diaphragm which divides the housing and the space in the housing, one side of which is formed into a pressure chamber in which compressed air enters and exits from the air tank side, a return spring that elastically radiates the diaphragm in the pneumatic direction, and one end of the diaphragm. In the actuator for operation of the turbocharger waste gate valve consisting of a working rod fixed to the other end and connected to the waste gate valve side of the turbocharger,
And a check valve for discharging air in the pressure chamber to the outside when a pressure equal to or greater than a reference value is formed in the pressure chamber. A safety device for an actuator for operating a waste gate valve of a turbocharger.
[2" claim-type="Currently amended] The method of claim 1,
The check valve is a retainer and a valve seat fixed to the housing, a ball valve for opening and closing the valve seat, a spring for supporting the ball valve, a connecting strap for connecting the ball valve and the diaphragm, a hole formed in the retainer to pass through the connecting strap Safety device for the actuator for the operation of the waste gate valve of the turbocharger comprising a.
[3" claim-type="Currently amended] The method of claim 2,
The retainer is a safety device of the actuator for operating the wastegate valve of the turbocharger, characterized in that the air flow hole for discharging the air to the outside when the ball valve falls from the valve seat.
[4" claim-type="Currently amended] The method of claim 3, wherein
And the ball valve is supported by the spring through a support plate having a hole through which a connecting strap passes.

类似技术:

---

公开号 | 公开日 | 专利标题

---

CN100379951C|2008-04-09|Engine valve actuation system and method using reduced pressure common rail and dedicated engine valve

---

US5884482A|1999-03-23|Combustion engine of turbocompound type with exhaust gas brake

---

CN103016161B|2017-08-04|Vacuum system for engine

---

US6807801B2|2004-10-26|Rapid shutdown and ecology system

---

CA1262666A|1989-11-07|Fuel line purging device

---

EP0896651B1|2003-01-15|Device and method in combustion engines

---

DE19711307C2|2000-08-03|Electronic controller for a turbocharger wastegate

---

US6810667B2|2004-11-02|Bypass valve system of a turbo-charged engine

---

KR100751607B1|2007-08-22|System and method for internal exhaust gas recirculation

---

US3020901A|1962-02-13|Supercharger for internal combustion engines

---

EP0477579B1|1997-02-12|Power turbine bypass for improved compression braking

---

DE102014224975A1|2015-06-11|Bidirectional suction fan with valves for pump control and vacuum generation

---

US5564386A|1996-10-15|Motorbrake for a diesel engine

---

DE3904497C1|1990-01-25|

---

US6497097B2|2002-12-24|Turbocharged engine having engine compression braking control

---

US5537980A|1996-07-23|High pressure fuel injection system for internal combustion engine

---

CN103867325A|2014-06-18|Method and system for vacuum generation

---

EP1880092B1|2011-02-16|Valve regulation for turbocharger

---

KR20010032950A|2001-04-25|Variable lost motion valve actuator and method

---

KR101107861B1|2012-01-31|Engine brake control pressure strategy

---

KR960038084A|1996-11-21|How to operate engine brakes in a four-stroke reciprocating internal combustion engine

---

EP0042263B1|1985-01-16|Turbocharger control actuator

---

JPH11502585A|1999-03-02|Camless engine with compression release braking

---

GB2323129A|1998-09-16|Turbocharged engine system with recirculation and supplemental air supply

---

ES2044864T3|1994-01-16|Air dryer purge control for powered turbos compressors.

同族专利:

---

公开号 | 公开日

---

KR100440018B1|2004-07-14|

引用文献:

---

公开号 | 申请日 | 公开日 | 申请人 | 专利标题

---

法律状态:
2001-10-08|Application filed by 현대자동차주식회사

---

2001-10-08|Priority to KR10-2001-0061784A

---

2003-04-16|Publication of KR20030029682A

---

2004-07-14|Application granted

---

2004-07-14|Publication of KR100440018B1

优先权:

---

申请号 | 申请日 | 专利标题

---

KR10-2001-0061784A|KR100440018B1|2001-10-08|2001-10-08|Actuator safety apparatus|