Direct injection engine

Details Direct injection engine Direct injection engine

2005-08-16

2005-08-16

Mohanty, Bibhu (Department: 3747)

Internal-combustion engines

Combustion chamber

C123S193600

Reexamination Certificate

active

06928997

ABSTRACT:
An exhaust-valve-side portion of a bottom surface of a bowl is connected to an upper surface of a piston by a smoothly curved surface. Therefore, a separation of a tumble flow can be minimized and air flow introduced into the bowl is more strongly tumbled. Fuel mixed with the air flow is also introduced into the bowl, so a generation of a carbon layer that is caused by contact of fuel and oil with the wall can be prevented. A width of the exhaust-valve-side portion of the bowl is greater than a width of the intake-valve-side portion of the bowl and the side walls of the bowl are formed as curved surfaces. The intake valve pocket is formed as a single groove, accumulation of carbon can be minimized, and propagation of a flame during the combustion occurs easily.

REFERENCES:
patent: 4005684 (1977-02-01), Habu
patent: 6129065 (2000-10-01), Ueda et al.
patent: 6216662 (2001-04-01), Sapsford

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