Exhaust manifold expansion slot for internal combustion motor

Details Exhaust manifold expansion slot for internal combustion motor Exhaust manifold expansion slot for internal combustion motor

1992-02-03

1992-12-29

Cross, E. Rollins

Internal-combustion engines

Two-cycle

Whirl through piston-controlled ports

123 65EM, 123175R, 60323, 60272, 2988606, F02M 2500, B23P 1300

Patent

active

051742527

ABSTRACT:
A multiple cylinder internal combustion cylinder block having a cast exhaust manifold means integrally cast with the block is disclosed. The manifold means includes manifold port portions that communicate with the cylinder bores, and an expansion slot is provided in the manifold port portions adjacent the cylindrical bores to relieve stress that tends to distort the cylindrical bores of the block.

REFERENCES:
patent: 4079588 (1978-03-01), Yoshimura et al.
patent: 4117674 (1978-10-01), Tadokoro
patent: 4184462 (1980-01-01), Hale
patent: 4187809 (1980-02-01), Lanpheer et al.
patent: 4337734 (1982-07-01), Iio
patent: 4373475 (1983-02-01), Kirk
patent: 4401061 (1983-08-01), Matsushita et al.
patent: 4559908 (1985-12-01), Flaig et al.
patent: 5134976 (1992-08-01), Towner et al.

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