Engine intake system having a supercharger

Patent · Tue Oct 27 04:00:00 EST 1987

OSTI ID:5684300

Yajima, T

An engine intake system is described including a supercharger of a type comprising a casing, a rotor provided in the casing for rotation and having axially extending cells which are arranged in circumferential direction with respect to each other. A first end wall is provided on the casing at an end adjacent to one axial end of the rotor and formed with exhaust gas inlet port means and exhaust gas outlet port means. A second end wall is provided on the casing at the other axial end of the rotor and formed with intake air introduced into the rotor through the intake air inlet port means is compressed in the rotor under pulsating pressure of the exhaust gas introduced into the rotor before the intake air is discharged through the intake air outlet port means. A part of the intake air is passed through the axially extending cells to the exhaust gas outlet port means to cool the rotor. First intake passage means connect the intake air inlet port means, second intake passage means connect the intake air outlet port means with engine combustion chamber means, first exhaust passage means connect with the exhaust gas inlet port means, with the engine combustion chamber means, second exhaust passage means connected with the exhaust gas outlet port means, bypass passage means bypassing the supercharger and extending between the first and second intake passage means, bypass valve means for normally closing the bypass passage means and opening the bypass passage means at least in an engine start period. Intake air cooling means provide in the second intake passage means for cooling the intake air from the intake air outlet port means.

• Assignee: Mazda Motor Corp., Hiroshima
• Patent Number(s): US 4702756
• OSTI ID: 5684300
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
AIR FLOW
COMPRESSORS
DESIGN
ENGINES
EXHAUST SYSTEMS
FILTERS
FLUID FLOW
FUEL INJECTION SYSTEMS
FUEL SYSTEMS
GAS FLOW
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
ROTORS
SUPERCHARGERS