Method of controlling intake air quantity for internal combustion engines

Patent · Mon Feb 24 23:00:00 EST 1986

OSTI ID:6045698

Hasegawa, S; Mishima, Y; Kishi, N; Makino, Y

A method is described of controlling the quantity of intake air being supplied to an internal combustion engine having an intake passage, a throttle valve arranged in the intake passage, a first auxiliary air passage bypassing the throttle valve. A first control valve is arranged in the first auxiliary air passage for controlling the quantity of supplementary air to be supplied to the engine through the first auxiliary air passage by means of on-off control of the opening area of the first auxiliary air passage. A second auxiliary air passage bypasses the throttle valve, and a second control valve is arranged in the second auxiliary air passage for controlling the quantity of supplementary air to be supplied to the engine through the second auxiliary air passage by means of on-off control of the opening area of the second auxiliary air passage. The method described here consists of the steps of: (1) detecting atmospheric pressure encompassing the engine; (2) determining whether or not the engine is operating in a particular operating condition; and (3) selectively actuating the first and second control valves in response to the value of the atmospheric pressure detected at the step (1) in such a manner that the sum of the opening areas of the first and second auxiliary air passages increases as the detected value of the atmospheric pressure decreases, when the engine is determined to be operating in the particular operating condition.

• Assignee: Honda Giken Kogyo K.K., Tokyo
• Patent Number(s): US 4572141
• OSTI ID: 6045698
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
AIR FLOW
ATMOSPHERIC PRESSURE
CONTROL EQUIPMENT
CONTROL SYSTEMS
ELECTRONIC EQUIPMENT
ENGINES
EQUIPMENT
FLOW REGULATORS
FLUID FLOW
FUEL INJECTION SYSTEMS
FUEL SYSTEMS
FUEL-AIR RATIO
GAS FLOW
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
OPERATION
PRESSURE MEASUREMENT
VALVES