Control device for engine

Abstract

Abstract PURPOSE:To prevent an engine stop by changing a preset value in deceleration decision in a direction of spreading a deceleration control area when a low pressure of air is detected, in case of performing a predetermined deceleration control so as to improve an engine output, when an engine is decided for its deceleration condition. CONSTITUTION:During operation of an engine, when it is decided with a throttle valve 5 in a fully closed condition from an output of a throttle opening sensor 22 further with a transmission in a neutral position from an output of a neutral switch 26, it is decided from an output of an air pressure sensor 25 whether a pressure of air is low or not, that is, whether the ground is lowland or highland. In accordance with the decision result, a dashpot correction starting speed is set higher in the highland than in the lowland. In the time of dashpot action, a solenoid opening and closing valve 15 in a bypass guide path 14 is actuated, supplying dashpot correction air to the engine 1 to temporarily increase its output, and a sudden speed drop of the engine in its deceleration is prevented.

Inventors

• 👤 Hideo Shiraishi
• 👤 白石　英夫

Bibliographic Details