Electronically controlled fuel injection process and equipment in internal combustion engine

Abstract

Abstract PURPOSE:To obtain adequate accelerating performance in spite of fuel cut, etc. in such a way that in a structure that fuel injection rate is compensated in response to the condition in the engine, etc., it is constituted to damp the accelerating incremental value when warming-up every synchronous injection of fuel. CONSTITUTION:During ordinary operation, an electronic control circuit 38 computes the reference injection time Tp through each output from an air-flow meter 12 and a distributor 14, and the effective synchronous injection time tau1 is computed by compensating said time Tp in response to signals from other various sensors 16, 22, etc. Besides, an injection valve 36 is controlled by computing the synchronous injection time taus in such a way that the unavailable injection time tauv which is found out when the battery voltage is abated is added to the stated time tau1. Hereat, the control circuit 38 also performs the accelerating incremental compensation when warming up in accordance with the accelerating incremental compensation factor when warming-up, but in this case, it is controlled so as to damp said compensating factor every synchronous injection. And its damping proportion is changed in compliance with the relationship of magnitude between the accelerating incremental compensation factor at the present warming-up time and its initial value.

Inventors

• 👤 Nobuyuki Kobayashi
• 👤 伸行 小林
• 👤 Hiroshi Ito
• 👤 博 伊藤
• 👤 Kazuhiko Funato
• 👤 船戸　和彦
• 👤 Kunihiro Fujino
• 👤 藤野　邦寛

Bibliographic Details