公开(公告)号：US3616784A

公开(公告)日：1971-11-02

申请号：US3616784D

申请日：1970-07-17

Applicant: GEN MOTORS CORP

Inventor： BARR PAUL N

IPC: F02D41/06 ,  F02N11/08

CPC classification number: F02D41/065

Abstract: IN AN ELECTRONIC FUEL INJECTION SYSTEM, FUEL IS APPLIED TO AN INTERNAL COMBUSTION ENGINE FOR THE DURATION OF INDIVIDUAL CONTROL PULSES DEVELOPED IN SYNCHRONIZATION WITH THE ROTATION OF THE ENGINE. THE ENGINE STARTING SEQUENCE IS DIVIDED INTO ALTERNATE CRANKING PERIODS AND RESTING PERIODS. DURING EACH CRANKING PERIOD, ADDITIONAL CONTROL PULSES ARE SUPPLIED AT A FREQUENCY WHICH IS INVERSELY RELATED TO THE TEMPERATURE OF THE ENGINE AND WHICH IS ALSO INVERSELY RELATED TO THE SUPPLY VOLTAGE OF A POWER SOURCE. FURTHER, THE ADDITIONAL CONTROL PULSES ARE SUPPLIED ONLY DURING AN ENRICHMENT INTERVAL. THE MINIMU POSSIBLE DURATION OF THE ENRICHMENT INTERVAL IS DETERMINED AS A

DIRECT FUNCTION OF THE DURATION OF THE INSTANT CRANKING PERIOD. THE MAXIMUM POSSIBLE DURATION OF THE ENRICHMENT INTERVAL IS DETERMINED AS A DIRECT FUNCTION OF THE DURATION OF THE PREVIOUS RESTING PERIOD AND AS AN INVERSE FUNCTION OF THE DURATION OF THE PREVIOUS CRANKING PERIOD.

公开(公告)号：US3683871A

公开(公告)日：1972-08-15

申请号：US3683871D

申请日：1970-07-17

Applicant: GEN MOTORS CORP

Inventor： BARR PAUL N ,  GAMBILL CHARLES C

IPC: F02D41/06 ,  F02B3/00 ,  F02N17/00

CPC classification number: F02D41/065

Abstract: In an electronic fuel injection system, fuel is applied to an internal combustion engine for the duration of individual control pulses developed in synchronization with the engine rotation. During cranking of the engine, additional control pulses are supplied at a frequency which is inversely related to the temperature of the engine and which is also inversely related to the supply voltage of a power source. In a preferred embodiment, the frequency of the additional control pulses is doubled when the supply voltage falls below a minimum acceptable level.

Abstract translation: 在电子燃料喷射系统中，在与发动机旋转同步产生的单个控制脉冲的持续时间内，向内燃机施加燃料。 在发动机起动期间，以与发动机温度成反比的频率提供额外的控制脉冲，并且也与电源的电源电压成反比。 在优选实施例中，当电源电压低于最小可接受电平时，附加控制脉冲的频率加倍。