Fuel injection detecting system for a diesel engine

Details Fuel injection detecting system for a diesel engine Fuel injection detecting system for a diesel engine

1982-10-29

1987-06-02

Miller, Carl Stuart

Internal-combustion engines

Charge forming device

Fuel injection system

123478, 119 A, F02M 3900

Patent

active

046694404

ABSTRACT:
A fuel injection detecting system is used with a diesel engine having a fuel injection nozzle, the nozzle including a movable member for effecting fuel injection into the engine when the valve member is displaced from its normal position and interrupting fuel injection when the valve member is returned to its normal position. The detecting system includes a sensor for sensing displacement of the valve member and generating a signal indicative thereof. A comparator is provided to compare the signal from the sensor with a reference signal and to generate a signal indicative of fuel injection via the nozzle. The detecting system also includes a device for preventing the fuel injection signal from including components unrelated to fuel injection via the nozzle. This device may disable the sensor for a predetermined period immediately after the first major displacement of the valve member. Alternatively, the device may adjust the reference voltage so as to hold the voltage thereof at a level exceeding that of all features of the sensor signal except the signal largest peak during each fuel injection.

REFERENCES:
patent: 4090404 (1978-05-01), Dupont et al.
patent: 4102181 (1978-07-01), Cser et al.
patent: 4130013 (1978-12-01), Bailey
patent: 4185494 (1980-01-01), Yelke
patent: 4266427 (1981-05-01), Wesley
patent: 4359032 (1982-11-01), Ohie

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