Internal-combustion engines – Combustion chamber means having fuel injection only – Using multiple injectors or injections
Patent
1990-09-05
1991-12-10
Wolfe, Willis R.
Internal-combustion engines
Combustion chamber means having fuel injection only
Using multiple injectors or injections
123506, F02D 4140, F02M 4502
Patent
active
050708368
ABSTRACT:
The invention is directed to a method and an arrangement for controlling the fuel injection in a high-pressure fuel pump. Magnetic valves determine the fuel quantity to be injected into the engine. The magnetic valve is controlled during the pumping phase of the pumping element in such a manner that first a preinjection and then a main injection is carried out. In specific operating conditions, the control apparatus determines the duration of the drive pulses for the magnetic valve at which a preinjection just takes place. With the duration of the drive pulses as a basis, the control apparatus forms compensating signals for the drive pulses which effect preinjection and stores the same.
REFERENCES:
patent: 4704999 (1987-11-01), Hashikawa et al.
patent: 4745898 (1988-05-01), Egler et al.
patent: 4782803 (1988-11-01), Kikuchi
patent: 4838233 (1989-06-01), Hayashi et al.
patent: 4840155 (1989-06-01), Karle
Birk Manfred
Eblen Ewald
Engel Gerhard
Flaig Ulrich
Grieshaber Hermann
Ottesen Walter
Robert & Bosch GmbH
Wolfe Willis R.
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