Honda Giken Kogyo Kabushiki Kaisha

Masaaki Tomii

Masaki Ueno

Hiroyuki Sugiura

Yoshitaka Hibino

Toshikazu Oketani

Akira Hashimoto

Kentaro Yokoo

Hirohide Fujino

A fuel supply control system for an internal combustion engine wherein during startup of the engine, a fuel supply amount is calculated according to a fuel amount calculating method suitable for startup of the engine, and the calculated amount of fuel is supplied to the engine. After startup of the engine, a fuel supply amount is calculated according to a fuel amount calculating method suitable for after-startup of the engine and the calculated amount of fuel is supplied to the engine, the fuel supply amount during startup of the engine being smoothly changed to the fuel supply amount suitable for after-startup&mdash;during the transition from startup to after-startup.

Fuel supply control system for internal combustion engine

In an exhaust secondary air supply system including an electric air pump and a flow rate control valve disposed in an air supply passage connected to an exhaust passage of an engine, the electric air pump is first driven after the start of the engine, and the flow rate control valve is then opened after a lapse of a predetermined time. At a time after starting the driving of the electric air pump, the abnormality of the electric air pump is detected by comparing a deviation between the current before and after driving of the electric air pump with a predetermined reference value. After opening of the flow rate control valve, the abnormality of the flow rate control valve is detected by comparing the deviation between the current before and after the opening of the flow rate control valve with a predetermined reference value.

Abnormality detecting device for exhaust secondary air supplying system

Growing community of inventors

Wako, Japan

Masaaki Tomii