Internal combustion engine

Details Internal combustion engine Internal combustion engine

1985-01-09

1986-05-06

Feinberg, Craig R.

Internal-combustion engines

Multiple cylinder

Cylinders in-line

123193P, 123 48C, F02B 3314, F02B 1904

Patent

active

045864659

ABSTRACT:
An internal combustion engine has a cylinder with a porting ring adjacent the cylinder head to reduce the diameter of the cylinder. The piston in the cylinder has a reduced diameter crown portion complementary to the porting ring and an upper face on the crown provided with a small clearance from the cylinder head to provide a large squish area. A primary combustion chamber of "dogbone" shape is provided in the crown, while a secondary combustion chamber is provided under the crown. On the power stroke, the sparking plug ignites the air/fuel mixture in the primary combustion chamber and the pressure pulse generated pushes the piston down the cylinder. When the piston crown clears the porting ring, the air/fuel mixture in the secondary combustion chamber is ignited and a second pressure pulse is applied to the piston. The slower, staged, burning of the air/fuel mixture in the cylinder applies a more powerful driving force to the piston, generating increased torque.

REFERENCES:
patent: 1673182 (1928-06-01), Burtnett
patent: 3489130 (1970-01-01), Polidan et al.
patent: 4070999 (1978-01-01), Matsuno
patent: 4324214 (1982-04-01), Garcea

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