Double overhead camshaft four valve diesel engine with side prec

Details Double overhead camshaft four valve diesel engine with side prec Double overhead camshaft four valve diesel engine with side prec

1993-03-08

1994-05-10

Wolfe, Willis R.

Internal-combustion engines

Precombustion and main combustion chambers in series

Having specific connecting passage means between...

123302, 1231936, F02B 1918, F02F 328

Patent

active

053098790

ABSTRACT:
A four valve, double overhead camshaft diesel engine (10) has a precombustion chamber (30) with an angled and tapered transfer passage (60) leading to the main combustion chamber (44). The transfer passage (60) is tapered to provide a larger lower end (62) facing the main chamber (44) and smaller upper end (64) facing the pre-combustion chamber (30). The pre-combustion chamber is spherical, located on one side of the main combustion chamber. Air passing through the passage (60) during the compression stroke undergoes heating and swirling within the pre-combustion chamber. The piston has a domed upper surface with recessed lobes (20) and (22). Each recessed lobe functions as a valve pocket for the intake and exhaust valves (32) and (42).

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