Cylinder head for an internal combustion engine

Details Cylinder head for an internal combustion engine Cylinder head for an internal combustion engine

1985-05-21

1987-11-17

Feinberg, Craig R.

Internal-combustion engines

Means to whirl fluid before, upon, or after entry into...

Having multiple oxidant inlet means

123193H, F02B 3100

Patent

active

047066237

ABSTRACT:
The invention relates to a cylinder-type head for an internal combustion engine, preferably an Otto-type engine, with four valves per cylinder. The cylinder head accommodates at least one combustion chamber with a pair of inlet ports situated side by side and a pair of exhaust ports, situated opposite the inlet ports. With the object of facilitating gas flowing into the combustion chamber to swirl about the cylinder axis, the invention is essentially distinguished in that the interior surface of the combustion chamber between an inlet port and an exhaust port is implemented with a swirl-generating means. At the intersection between the base plane of the cylinder head, said means form a protrusion projecting radially inwards. The remaining interior surfaces of the combustion chamber lack such protrusion at the intersection with the base plane. To reinforce the swirl generation, the inlet duct, with its port situated farthest away from the protrusion, is formed to give the gas a direction having a substantially lesser angle to the base plane than the corresponding angle of the gas direction from the second inlet duct.

REFERENCES:
patent: 3045655 (1962-07-01), Formia
patent: 4246874 (1981-01-01), Nakagawa et al.

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