Supercharged internal combustion engine

Patent · Tue May 20 04:00:00 EDT 1980

OSTI ID:5399300

Nishimatsu, A; Ohashi, M; Tanaka, E

A supercharged internal combustion engine has a turbo supercharger mounted on an exhaust pipe so that a turbine of the supercharger is driven by engine exhaust gases to drive a blower for the compression of engine intake air. A bypass exhaust pipe is connected to the exhaust pipe at a point upstream of the supercharger and extends in bypassing relationship to the supercharger. A valve is provided in the exhaust system at the above-mentioned point to control the exhaust gas flow into and through the exhaust pipe and the bypass exhaust pipe, respectively. A valve actuator is responsive to variation in the intake pressure in the engine intake system downstream of a throttle valve to actuate the valve such that, when the intake pressure is not greater than a first predetermined value, the valve is actuated to fully close the exhaust pipe and, when the intake pressure becomes greater than a second predetermined value , the valve is actuated to fully close the bypass pipe, whereby the supercharger is operated only in a throttle full-open engine operating range and the supercharging air pressure is kept below a predetermined pressure level to prevent not only the supercharger but also the engine intake and exhaust systems from being continuously subjected to loads.

• Assignee: Nippon Soken Inc (Japan)
• Patent Number(s): US 4203296
• OSTI ID: 5399300
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
BLOWERS
COMPRESSORS
CONTROL EQUIPMENT
DESIGN
ENGINES
EQUIPMENT
EXHAUST GASES
EXHAUST SYSTEMS
FLOW REGULATORS
FLUIDS
GASEOUS WASTES
GASES
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
MACHINERY
SUPERCHARGERS
TURBINES
TURBOMACHINERY
VALVES
WASTES