Fuel injection control for diesel engine

Details Fuel injection control for diesel engine Fuel injection control for diesel engine

1986-06-03

1987-11-10

Dolinar, Andrew M.

Internal-combustion engines

Combustion chamber means having fuel injection only

Using multiple injectors or injections

123435, F02D 4138

Patent

active

047049995

ABSTRACT:
In a fuel injection control for diesel engine, in order to eliminate engine noise, particularly, the "idling knocking" noise occurring during engine idling, by controlling a pilot injection, a method for controlling the fuel injection includes the steps of: detecting an idling state of the diesel engine, pressure in a combustion chamber, engine rotational speed and crank angle to obtain a reference position; selecting a valve opening pressure of a fuel injection nozzle at a relatively low level when the idling state is detected, thereby setting a two peaks characteristic of a fuel injection rate within an extent of the idling rotational speed; and controlling a pressure increment rate in the combustion chamber to within a predetermined value by changing a fuel injection quantity of a pilot injection.

REFERENCES:
patent: 2470709 (1949-05-01), MacMillan
patent: 3575146 (1971-04-01), Creighton et al.
patent: 4216750 (1980-08-01), Kobayashi
patent: 4601269 (1986-07-01), Kato et al.

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