Performance responsive muffler for internal combustion engines

Patent · Tue Feb 27 04:00:00 EST 1990

OSTI ID:6907055

Finkle, L J

This patent describes an engine muffler responsive to exhaust flow rate for an internal combustion engine. It comprises: a body forming an internal expansion chamber and having an inlet port and an exhaust port spaced apart from one another, to receive and to discharge exhaust gas stream, respectively, and a variable restrictor downstream from the inlet port and upstream from the outlet port, through which the exhaust gas stream must flow to reach the exhaust port. The variable restrictor including a valving element whose operative position can variably occlude the gas stream flow as a function of engine exhaust flow rate. Wherein the variable restrictor is formed with a solid wall disposed about the valving element to define a constricting annular passageway having a cross section that varies with distance from the inlet port and from the exhaust port.

• Assignee: Larry K. Goodman, Cerritos, CA
• Patent Number(s): US 4903486; A
• Application Number: PPN: US 7-259151A
• OSTI ID: 6907055
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
DESIGN
ENGINES
EXHAUST GASES
EXHAUST SYSTEMS
FLUID FLOW
FLUIDS
GAS FLOW
GASEOUS WASTES
GASES
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
OPERATION
WASTES