CPC F02F 1/4235 (2013.01) [F02B 1/06 (2013.01)] | 16 Claims |
1. An engine comprising:
a multiple intake valve cylinder to accommodate a reciprocating piston and define a combustion chamber there-adjacent; and
an intake valve assembly with inlets to at least two intake valves of parallel arrangement for delivery of a spark-ignited fuel-air mixture to the combustion chamber, at least one of the inlets facilitating an angled, substantially non-perpendicular tumble flow of the fuel-air mixture to the chamber via a channel about the inlets that is angled at between about 20° and about 45° and that is of a reducing diameter from the at least one of the inlets to the other inlet for enhancing the tumble flow.
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