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1. 发明专利

DE2716164A1 未知
公开(公告)号：DE2716164A1
公开(公告)日：1977-11-03
申请号：DE2716164
申请日：1977-04-12
申请人： NIPPON SOKEN , TOYOTA MOTOR CO LTD
发明人： HATTORI TADASHI , TAKATA AKIRA , FUKUDA TAMOTSU , NAKASE TAKAMICHI
IPC分类号： F02D41/14 , F02D35/00
摘要： An air-fuel ratio adjusting system controls the amount of additional air supply through the bypass passage of the carburetor to ensure optimum engine operation even in a warming up condition of the engine. The air-fuel ratio adjusting system includes an air-fuel ratio sensor disposed in the exhaust manifold, a warm-up sensor for detecting the temperature of engine cooling water or engine block, and a control unit for providing a control signal to a driving motor for the bypass valve. The bypass valve is controlled so that the air-fuel ratio of the mixture becomes the stoichiometric one and at the same time, during the warming up condition, the maximum opening of the bypass valve is limited to a predetermined degree depending on the temperature of the engine.

2. 发明专利

DE2724088A1 未知
公开(公告)号：DE2724088A1
公开(公告)日：1977-12-08
申请号：DE2724088
申请日：1977-05-27
申请人： NIPPON SOKEN , TOYOTA MOTOR CO LTD
发明人： HATTORI TADASHI , TAKATA AKIRA , FUKUDA TAMOTSU , NAKASE TAKAMICHI
IPC分类号： F02B1/04 , F02D41/14 , F02D35/00

3. 发明专利

DE2727861A1 未知
公开(公告)号：DE2727861A1
公开(公告)日：1977-12-29
申请号：DE2727861
申请日：1977-06-21
申请人： NIPPON SOKEN , TOYOTA MOTOR CO LTD
发明人： HATTORI TADASHI , TAKATA AKIRA , FUKUDA TAMOTSU , NAKASE TAKAMICHI
IPC分类号： F01N3/22 , F02D41/14 , F02D45/00 , F02M23/04 , F02D35/00
摘要： In an air flow control system including a gas sensor for detecting the concentration of a constituent of the exhaust gases from an internal combustion engine, an air passage for supplying additional air into the intake system or exhaust system of the engine, a by-pass valve for varying the passage area of the additional air passage, and means for controlling the opening and closing of the by-pass valve in accordance with the detection signal from the gas sensor whereby the amount of additional air supplied into the intake system or exhaust system of the engine is controlled in accordance with the concentration of the constituent of the exhaust gases, there is further provided an acceleration/deceleration sensor for detecting acceleration or deceleration of the engine, whereby when a transition from the acceleration or deceleration operating condition to the steady-state operating condition is detected, the opening and closing control of the by-pass valve is accomplished in such a manner that the amount of opening and closing movement of the by-pass valve is gradually decreased. Thus, when the engine comes into the steady-state operation from the transient operation, the rate of change in the opening of the by-pass valve is gradually decreased to reduce variation of the air-fuel ratio upon the transition from the acceleration/deceleration operation to the constant speed operation.

4. 发明专利

DE2726616A1 未知
公开(公告)号：DE2726616A1
公开(公告)日：1977-12-22
申请号：DE2726616
申请日：1977-06-13
申请人： NIPPON SOKEN , TOYOTA MOTOR CO LTD
发明人： HATTORI TADASHI , TAKATA AKIRA , FUKUDA TAMOTSU , NAKASE TAKAMICHI
IPC分类号： F02D41/14 , F02D33/02

5. 发明专利

DE2716151A1 未知
公开(公告)号：DE2716151A1
公开(公告)日：1977-10-27
申请号：DE2716151
申请日：1977-04-12
申请人： NIPPON SOKEN , TOYOTA MOTOR CO LTD
发明人： HATTORI TADASHI , TAKATA AKIRA , FUKUDA TAMOTSU , NAKASE TAKAMICHI
IPC分类号： F02D41/06 , F02D41/14 , F02D43/00 , F02M23/04 , F02D35/00
摘要： Additional air is supplied through an additional air passage having a bypass valve into the main air passage of an internal combustion engine downstream of the throttle valve, and the amount of the additional air is controlled in accordance with the opening of the bypass valve. The direction of rotation of a bypass valve driving pulse motor is controlled in accordance with the output signal of an air-fuel mixture ratio sensor mounted in the exhaust system of the engine. Also the rotational speed of the pulse motor is varied in accordance with the operating conditions of the engine during warm-up operation.

6. 发明专利

DE2724209A1 未知
公开(公告)号：DE2724209A1
公开(公告)日：1977-12-08
申请号：DE2724209
申请日：1977-05-27
申请人： NIPPON SOKEN , TOYOTA MOTOR CO LTD
发明人： HATTORI TADASHI , TAKATA AKIRA , FUKUDA TAMOTSU , NAKASE TAKAMICHI
IPC分类号： F02B1/04 , F02D41/14 , F02D35/00
摘要： An air-fuel ratio controlling system for an internal combustion engine including a control circuit for controlling, in accordance with a detected air-fuel ratio, the operation of a drive motor of a control valve mounted in an additional air supply passage. The control circuit includes a timing pulse generator for generating timing pulses synchronized with a running speed of the engine and thus the control valve is intermittently rotated by a predetermined amount in response to the timing pulses. By increasing the frequency of the timing pulses during the periods of rapid acceleration and deceleration, a response to the change in the engine speed is further improved.

7. 发明专利

DE2716353A1 未知
公开(公告)号：DE2716353A1
公开(公告)日：1977-11-17
申请号：DE2716353
申请日：1977-04-13
申请人： NIPPON SOKEN , TOYOTA MOTOR CO LTD
发明人： HATTORI TADASHI , TAKATA AKIRA , FUKUDA TAMOTSU , NAKASE TAKAMICHI
IPC分类号： F02D35/00 , F02M23/04

8. 发明专利

DE2619874A1 未知
公开(公告)号：DE2619874A1
公开(公告)日：1976-11-18
申请号：DE2619874
申请日：1976-05-05
申请人： NIPPON SOKEN , TOYOTA MOTOR CO LTD
发明人： HATTORI TADASHI , TAKADA AKIRA , NAKASE TAKAMICHI , SUGI FUMIO
IPC分类号： F02D35/00 , F02D41/14 , F02M7/00 , F02M7/12 , F02M23/04 , F02M37/20
摘要： In an air-to-fuel ratio adjusting system for an internal combustion engine which comprises an additional air supply passage communicating with the carburetor of an internal combustion engine at the position downstream of its throttle valve, a control valve disposed in the additional air supply passage to vary the passage area thereof, and a percolation sensor for detecting percolation phenomenon of the fuel during idling operation of the engine is provided. When the occurrence of a percolation phenomenon is determined in accordance with the output signal of the percolation sensor, the control valve is controlled in response to the output signal of an air-to-fuel ratio sensor, whereas the control valve is held in a predetermined valve position when there is no occurrence of percolation phenomenon during idling operation of the engine.

9. 发明专利

JPS535324A FUELLAIR RATIO REGULATOR 失效
公开(公告)号：JPS535324A
公开(公告)日：1978-01-18
申请号：JP7876676
申请日：1976-07-02
申请人： TOYOTA MOTOR CO LTD , NIPPON SOKEN
发明人： TAKADA AKIRA , FUKUDA KAN , HATSUTORI TADASHI , NAKASE TAKAMICHI
IPC分类号： F02D41/14 , F02D33/00
摘要： PURPOSE:To ensure the proper control of fuel-air ratio for an internalcombustion engine fitted with a ternary catalyst unit.

10. 发明专利

JPS52145627A AIR FLOW RATE REGULATOR 失效
公开(公告)号：JPS52145627A
公开(公告)日：1977-12-03
申请号：JP6254276
申请日：1976-05-28
申请人： NIPPON SOKEN , TOYOTA MOTOR CO LTD
发明人： HATSUTORI TADASHI , TAKADA AKIRA , FUKUDA KAN , NAKASE TAKAMICHI
IPC分类号： F02D41/14 , F01N3/22 , F02D21/10 , F02M23/04
摘要： PURPOSE:To sufficiently display the purifying function of a catalyzer convertor, by effectively controlling air flow rate additionally fed both in the stationary and transient operation condition of an engine - for example, the variation of the air fuel ratio of mixture is constantly controlled.

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