The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 24, 2001
Filed:
Feb. 22, 1999
Suzuhiro Saiki, Kanagawa, JP;
Isuzu Motors Limited, Tokyo, JP;
Abstract
An engine operation control device which sets higher than the target revolution speed for the idling state the target revolution speed of the engine immediately after the engine operation has shifted to the idling state, to prevent troubles caused by bubbles in the working fluid. When the engine operation shifts to the idling state at time t,, the count value Cnt of the idling counter starts counting. When the count value Cnt reaches the set value Cnt,, the revolution speed correction amount And is added to the target revolution speed for the idling state. The correction amount And progressively decreases with the elapse of time after the engine operation has shifted to the idling state. Because the fuel injection is performed in such a manner as to produce a higher target revolution speed than normal, it is possible to suppress the generation or expansion of bubbles that would otherwise occur under reduced pressure in the injectors used in the fuel injection system as a result of engine operation shift to the idling state.