Pressure controller for supercharged internal combustion engines

Patent · Tue Mar 01 04:00:00 EST 1988

OSTI ID:5056946

Takeda, T; Shibata, N; Tamura, T

A supercharged pressure controller for an internal combustion engine having an engine air intake passageway including a carburetor with a throttle valve, is described comprising: a supercharger located upstream of the carburetor, a surge tank located between the supercharger and the carburetor, a relief valve connected to the surge tank for releasing air from the surge tank when it opens, a switch valve communicating with ambient air, and a port formed downstream of the throttle valve, a vehicle speed sensor; a solenoid controlled valve connected to the vehicle speed sensor and communicating with ambient air, the surge tank and the relief valve. The switch valve is so constructed as to supply a negative pressure or an ambient air pressure to the relief valve according to a pressure generated at the port formed downstream of the throttle valve. The relief valve is so constructed as to be opened when the difference between the pressure in the surge tank and the pressure supplied to the relief valve from the switch valve exceeds a predetermined degree, and the solenoid controlled valve is so constructed as to make the relief valve communicate with the surge tank when the vehicle speed exceeds a predetermined value to assist the opening action of the relief valve.

• Assignee: Aisin Seki Kabushiki Kaisha, Kariya
• Patent Number(s): US 4727847
• OSTI ID: 5056946
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
AIR FLOW
CARBURETORS
COMPRESSORS
CONTAINERS
CONTROL
CONTROL EQUIPMENT
ELECTRIC COILS
ELECTRICAL EQUIPMENT
ENGINES
EQUIPMENT
FLOW REGULATORS
FLUID FLOW
FUEL SYSTEMS
GAS FLOW
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
MEASURING INSTRUMENTS
PRESSURE CONTROL
SOLENOIDS
SUPERCHARGERS
TANKS
VALVES
VELOCIMETERS