专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JPH0422753A INTAKE DEVICE OF INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH0422753A
公开(公告)日：1992-01-27
申请号：JP12422590
申请日：1990-05-16
申请人： NIPPON SOKEN , TOYOTA MOTOR CORP
发明人： MATSUMOTO TATSUYOSHI , SAITO KIMITAKA , KIHARA TAKANARI , II AKIRA
IPC分类号： F02M29/02 , B23P15/00 , F02M19/00 , F04B1/14 , F04B1/28 , F04B27/08
摘要： PURPOSE:To prevent running condition and exhaust composition from degrading due to variation of air fuel ratio by providing a barrier means such as a controlling valve in an intake path so that liquid film-like fuel clinging to and flowing on the inner wall surface of the intake path under the low load condition is atomized and mixed into an intake flow. CONSTITUTION:When a throttle valve 9 is fully closed in idling to increase negative pressure in an intake path 7, air in a surge tank 21 is sucked out through an air path 22. Negative pressure in a negative pressure operating chamber 19 of an actuator 18 is thereby increased with slow speed, so that a piston 15 is moved upward against a compression spring 17. A clamp arm 14 is thereby rotated left and a controlling valve 12 is moved to a vertical position to close the lower half of the intake path 7. Thus, most of liquid film- like fuel is stopped by a controlling valve 12 and rises to the upper edge along the controlling valve 12 to be accelerated and atomized by an intake flow so that it is well mixed with intake and flows from an intake valve 4 into a combustion chamber 3 to be burnt under a satisfactory condition.

2. 发明专利

JPH08210118A CRANKCASE EMISSION CONTROL SYSTEM 失效
公开(公告)号：JPH08210118A
公开(公告)日：1996-08-20
申请号：JP1511495
申请日：1995-02-01
申请人： NIPPON SOKEN , TOYOTA MOTOR CORP
发明人： TAKEYAMA MASAKI , YOSHINAGA TORU , TAKIGAWA MASAHIRO , II AKIRA , IURA TAKAO , IKETANI TARO
IPC分类号： F01M13/00 , F02M25/07
摘要： PURPOSE: To prevent generation of deposite, while preventing adhesion of drops of lubricating oil included in blowby gas through the contraflow of intake. CONSTITUTION: A connection port 4 of a blowby gas passage communicated with a crank case of an engine is opened to a wall surface of an intake passage (serge tank) 3 on a downstream side of a throttle valve 2 provided in an intake passage 1 of an internal combustion engine. Plate-like guide ribs 7, 7 are projected from the wall surface of the intake passage inward so as to form a guide groove 8 for guiding intake flow passing near the connection port 4 from the opening position of the connection port 4 to the wall surface of the intake passage on the downstream side thereof. Spiral contraflow is not generated since the intake flow inside the guide groove 8 is guided by means of the guide ribs 7. Blowby gas containing drops of lubricating oil is scattered therein. The oil drops are not included in the spiral contraflow, so that deposite is not generated on a throttle valve 2.

3. 发明专利

JPH09317569A GAS REFLUX DEVICE FOR ENGINE 失效
公开(公告)号：JPH09317569A
公开(公告)日：1997-12-09
申请号：JP15178196
申请日：1996-05-22
申请人： NIPPON SOKEN , TOYOTA MOTOR CORP
发明人： TAKEYAMA MASAKI , YOSHINAGA TORU , TAKIGAWA MASAHIRO , KAWAI TAIYO , II AKIRA
IPC分类号： F01M13/00 , F01M13/02 , F02M25/07 , F02M35/10 , F02M35/104
摘要： PROBLEM TO BE SOLVED: To provide the device generating no oil film sticking to a throttle valve and being capable of uniformly distributing reflux gas in each cylinder. SOLUTION: A serge tank 2 downstream of a throttle body 1 having a throttle valve 3 thereon is made larger in its dia. than the throttle body 1, and in the tank 2 a cylindrical part 2c having the same dia. as a small dial throttle body 1 is extended from an end of the body 1. A gas flow path is formed between the cylindrical part 2c and the inner wall of a downstream large dia. intake pipe 2a positioned outside of the part 2c, and a gas reflux pipe 5 is connected thereto for ensuring reflux of gas in the tank 2 without being effected by swirls and the like. The pipe 5 is arranged in a plane perpendicular to the axis of the part 2c to allow the gas to flow out into the tank 2 after it is diffused in the path 22, leading to good mixing with intake air for improving the distribution in each cylinder.

4. 发明专利

JPH11257106A THROTTLE BODY FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH11257106A
公开(公告)日：1999-09-21
申请号：JP7326198
申请日：1998-03-06
申请人： NIPPON SOKEN , TOYOTA MOTOR CORP
发明人： TANIMOTO KOICHI , OHARA YASUSHI , KOHAMA TOKIO , KAMINAGA KOICHI , TAKADA MITSURU , II AKIRA
IPC分类号： F02D9/10
摘要： PROBLEM TO BE SOLVED: To reduce the flow rate of an intake air to the throttle valve opening of a throttle body when its opening is set to a low level, and obtain the sufficient flow rate of the intake air when its opening is set to a high level. SOLUTION: A throttle bore 3 is at upstream side of a throttle valve 4 formed as a diameter contracting part 31, and is at downstream side formed as an diameter enlarging part 33. The gradient angle θ1 of the diameter contracting part 31 is set at 3-10 degrees, and the gradient angle θ2 of the diameter enlarging part 33 is set at 2-8 degrees. Thereby, the flow rate of the intake air is set to a low level by the peeling action of air flow when the opening of the throttle valve 4 is set to a low level, and the flow rate of the intake air is sufficiently obtained by diffuser action and the like of the diameter enlarging part 33 when the opening is set to a high level.

5. 发明专利

JPH08144732A BLOWBY GAS REFLUX DEVICE FOR ENGINE 失效
公开(公告)号：JPH08144732A
公开(公告)日：1996-06-04
申请号：JP31580494
申请日：1994-11-25
申请人： NIPPON SOKEN , TOYOTA MOTOR CORP
发明人： TAKEYAMA MASAKI , YOSHINAGA TORU , TAKIGAWA MASAHIRO , KAWAI TAIYO , II AKIRA
IPC分类号： F01M13/00 , F02M25/07 , F02M35/10
摘要： PURPOSE: To prevent adhesion of an oil film to a throttle valve by opening a blowby gas reflux tube to a gas flow passage formed between an inner tube and a downstream side intake inner tube located on its outer side. CONSTITUTION: A gas flow passage 22 is formed circumferentially between an outer periphery of an inner tube 41 and a surge tank inner wall 2a. A blowby gas circulation pipe 5 is opened to a lowermost wall end of a surge tank 2, being faced to the gas flow passage 22. The gas flow passage 22 is separated from a downstream area of a throttle valve 3 where spiral flow is generated, by a cylindrical wall of the inner tube 41, so that blowby gas passing the flow passage 22 is not influenced by the spiral flow. In addition, high speed intake flow directed to a downstream side exists near an opening 221 of the gas flow passage 22, so that the blowby gas in the flow passage 22 is suctioned by the ejector effect of the intake flow, and fed back into the surge tank 2. It is thus possible to prevent contraflow of the blowby gas to the throttle valve 3, and generation of deposite.

6. 发明专利

JPS57212351A ACCELERATING DEVICE FOR CARBURETTOR 失效
公开(公告)号：JPS57212351A
公开(公告)日：1982-12-27
申请号：JP9589081
申请日：1981-06-23
申请人： NIPPON SOKEN , TOYOTA MOTOR CO LTD , AISAN IND
发明人： SUZUKI KENICHI , II AKIRA , KAKO MIKITOSHI
IPC分类号： F02M7/08
摘要： PURPOSE:To reduce the amount of vaporized gasoline and the fluctuation of air-fuel ratio by a method wherein a valve mechanism which is the combination of a valve having a special constitution and an elastic seal member for the surface of a seat is provided in a fuel path for the accelerating device. CONSTITUTION:The valve mechanism, in which the valve 1 having a minute protruded and recessed surface such as a scratch or minute passage holes and the elastic seal member 2 for the surface of the seat are combined, is provided in the fuel path 6 of the series of accelerator. When the fuel in the path 6 is expanded upon the non-operation of the accelerating device, the fuel is returned to a fuel chamber 9 through a gap between the valve 1 and the seal member 2 and the blowing of the fuel out of a nozzle 3 is precluded. Further, when the accelerating device is being operated, a positive pressure in the path 6 pushes up the valve 1 to press it against the seal member 2 and the gap between the valve 1 and the seal member 2 is blocked thereby preventing the leakage of the fuel into the combustion chamber 9.

7. 发明专利

JPH09303128A BLOWBY GAS REFLUX DEVICE 失效
公开(公告)号：JPH09303128A
公开(公告)日：1997-11-25
申请号：JP12031196
申请日：1996-05-15
申请人： TOYOTA MOTOR CORP , AISAN IND
发明人： II AKIRA , INA TOKUMITSU
IPC分类号： F01M13/00
摘要： PROBLEM TO BE SOLVED: To provide a blowby gas reflux device to prevent the occurrence of a trouble due to heating of a throttle body and to prevent the fixing of a throttle valve during cold time. SOLUTION: A blowby gas reflux device comprises a passage consisting of a fresh air introduction pipe 19 to intercouple an intake passage 3 situated upper stream from a throttle valve 4 and a cylinder head cover 2; a passage consisting of a blowby gas reflux pipe 13 to intercouple the head cover 2 and the intake passage 3 situated downstream from the throttle valve 4: and a passage consisting of a second blowby gas reflux pipe 20 to intercouple the fresh air introduction passage and the intake passage 3 situated downstream from the throttle valve 4. A selector valve 11 to release the fresh air introduction passage and close the second blowby gas reflux passage when a negative pressure in the intake passage 3 situated downstream from the throttle valve 4 is high and switch the opening closing states when the negative pressure is low is arranged at a part wherein the second blowby gas reflux passage crosses the fresh air introduction passage. Even during a total load, blowby gas is prevented from a reverse flow.

8. 发明专利

JPH0193606A MULTI-STAGE DIAPHRAGM DEVICE 失效
公开(公告)号：JPH0193606A
公开(公告)日：1989-04-12
申请号：JP25073787
申请日：1987-10-06
申请人： TOYOTA MOTOR CORP , AISAN IND
发明人： NONOYAMA TAKAO , II AKIRA , NOGAMI SUSUMU , YAMAUCHI TOKIO
IPC分类号： F16J3/02 , F15B15/24
摘要： PURPOSE:To make the structure simple and compact by providing plural stages of vacuum induction ports in a cylinder, interlocking a slide rod with a diaphragm, and closing the vacuum induction ports in association with movement of the slide rod. CONSTITUTION:A cylinder 8 is formed with a plurality of vacuum induction ports 11. A slide rod 7 is provided on a central portion of a diaphragm 2. The vacuum induction ports 11 are adapted to be closed in association with movement of the slide rod 7. Accordingly, it is sufficient to provide the slide rod 7 in a vacuum chamber 3. Further, if plural stages of operational control positions are needed, it is merely necessary to increase the number of the vacuum induction ports 11. Thus, the structure can be made very simple and compact.

9. 发明专利

JPS62153539A FUEL INJECTION CONTROL OF INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPS62153539A
公开(公告)日：1987-07-08
申请号：JP29665985
申请日：1985-12-27
申请人： TOYOTA MOTOR CORP
发明人： II AKIRA , TANAKA YOSHIYUKI , HAYASHI KENJI
IPC分类号： F02D41/04 , F02D41/00
摘要： PURPOSE:To correctly control the air fuel ratio by determining the intake temperature correction coefficient of the fuel injection according to the intake air quantity, added with the intake temperature. CONSTITUTION:In a controller 20, the fundamental intake temperature correction coefficient is calculate from the fundamental injection corresponding to the intake on the basis of the intake pipe pressure detected by an intake pressure sensor 21 and the intake air temperature detected by an intake temperature sensor 22. The fundamental intake temperature correction coefficient is calculated so as to decrease as the intake temperature rises. Then, the correction value of the intake temperature correction coefficient is determined according to the fundamental injection quantity as the substitution value for the intake quantity. The correction value is calculated so as to increase as the fundamental injection increases. the intake correction coefficient is calculated through the multiplication of the fundamental intake temperature correction coefficient by the correction value, and the fuel injection is calculated by the multiplication of the fundamental injection by the intake temperature correction coefficient. The operation of a fuel injector 3 is controlled by the fuel injection.

10. 发明专利

JPS62153535A FUEL INJECTION CONTROLLER FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPS62153535A
公开(公告)日：1987-07-08
申请号：JP29583685
申请日：1985-12-26
申请人： TOYOTA MOTOR CORP
发明人： HAYASHI KENJI , II AKIRA , TANAKA YOSHIYUKI
IPC分类号： F02D41/04 , F02D41/00
摘要： PURPOSE:To improve the acceleration performance by making the air fuel ratio nearly equal to the engine demand value over the whole range of acceleration by taking into consideration of the adhering quantity of fuel due to the variation of the suction pipe pressure. CONSTITUTION:The suction pipe pressure, engine speed, the first and the second weighted average values of the suction pipe pressure which are memorized in the RAM of an electronic control circuit 44 are taken in, and the fundamental fuel injection is calculated on the basis of the suction pipe pressure and the engine speed. Then, the increase/decrease coefficient for the fuel injection is calculated by multiplying the constant A with the value which is obtained by subtracting the second weighted average value from the first weighted average value. The fuel injection is calculated by correcting the fundamental fuel injection by this coefficient, and a fuel injection valve 24 is opened for the corresponding time. Therefore, in acceleration, fuel injection is controlled so as to gradually increase from the initial period in acceleration towards the end of acceleration, and in deceleration, the fuel injection is controlled so as to gradually decrease from the initial period of deceleration towards the end of deceleration.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式