Patent ID: 6637396
Filing Date: 2003-10-28
Classification: F02B,F02M

Abstract:
An internal combustion engine having a plurality of combustion chambers which are ignited in a predetermined order, in which the previously generated positive pressure wave does not inhibit the flow of air during the intake stroke of the next-to-fire combustion chamber, said engine comprising:a plurality of intake passages respectively coupled to said combustion chambers; and a plenum chamber having first and second sub-chambers with one of said sub-chambers coupled to a first group of said intake passages and the other of said sub-chambers connected to a second group of said intake passages; said predetermined ignition order resulting in intake strokes within said combustion chambers alternating between the combustion chambers coupled to said first sub-chamber and the combustion chambers coupled to said second sub-chamber so that intake strokes in the combustion chamber are prevented from inhibiting the flow of air into the next-to-fire combustion chamber, said first group of the intake passages having end portions connected to said one of the sub-chambers, said second group of the intake passages having end portions connected to the other sub-chamber, and the end portions of the first group of the intake passages being positioned farther from the body of said engine than the end portions of the second group of intake passages.