Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1990-07-12
1991-06-11
Dolinar, Andrew M.
Internal-combustion engines
Charge forming device
Fuel injection system
123491, F02D 4106, F02D 4134
Patent
active
050223747
ABSTRACT:
The invention is directed to a sequential fuel injection method wherein the first injection end time point is determined at which the preinjections end. In addition, the first intake end time point is determined at which a signal occurs for the first time after the start of the method which is evaluated as a signal that indicates the end of an induction operation. Furthermore, a determination is made for which cylinder the above-mentioned time point applies. If the first-mentioned time point lies ahead of the second-mentioned time point, the sequential fuel injection is started for the determined cylinder. For the opposite position of the mentioned time points, the injection valve for that particular cylinder is driven whose induction cycle follows the determined cylinder with the injection valve being so driven that the entire fuel quantity is injected which was computed for the sequential injection. The method of the invention assures that an internal combustion engine receives a proper injection as soon as possible after the start thereof without an overenrichment of the mixture for the individual cylinders.
REFERENCES:
patent: 4418674 (1983-12-01), Hasegawa et al.
patent: 4459961 (1984-07-01), Nishimura et al.
patent: 4508083 (1985-04-01), Hasegawa et al.
patent: 4515131 (1985-05-01), Suzuki et al.
patent: 4732122 (1988-03-01), Scarnera et al.
patent: 4941449 (1990-07-01), Hoptner et al.
Denz Helmut
Grieser Klemens
Moz Rudolf
Stock Jurgen
Uttenweiler Winifred
Dolinar Andrew M.
Ottesen Walter
Robert & Bosch GmbH
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