Exhaust system for multiple cylinder two-stroke engines

Details Exhaust system for multiple cylinder two-stroke engines Exhaust system for multiple cylinder two-stroke engines

1977-09-12

1980-02-12

Lazarus, Ira S.

Internal-combustion engines

Two-cycle

Whirl through piston-controlled ports

60313, 60314, F02B 7700, F01N 708

Patent

active

041878094

ABSTRACT:
A two-stroke internal combustion engine having at least three cylinders includes an exhaust means with an exhaust cavity, an exhaust port at each cylinder and an exhaust port extension forming a chamber between the exhaust cavity and the exhaust port. Within the exhaust cavity exhaust pulse transmission means connect the port extension of an exhausting cylinder and the port extension of a charging cylinder with a pulse transmission path of a proper length to cause the exhaust pulse from an exhausting cylinder to arrive at the exhaust port of a charging cylinder prior to the complete closing of the exhaust port of the charging cylinder thereby forcing the air fuel mixture which escaped from the exhaust port of the charging cylinder and which is within the chamber thereof back into the charging cylinder prior to the closing of the exhaust port of the charging cylinder.

REFERENCES:
patent: 2306580 (1942-12-01), Wilson
patent: 3494334 (1970-02-01), Johnson
patent: 3692006 (1972-09-01), Miller et al.
patent: 3695238 (1972-10-01), Boerma
patent: 3808807 (1974-05-01), Lampheer

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