Title: Fuel porting for two cycle internal combustion engine

Abstract: Fuel porting and passage arrangements including transfer porting and passages between the crankcase and the combustion side of the piston, together with intake porting and passage arrangements for delivering fuel to the crankcase. The transfer and intake passages include portions of regions common to both or in communication with each other in relationships providing not only for direct delivery of fuel to the crankcase but also for augmenting fuel transfer into the combustion space.

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Inventors: Boyesen, Eyvind (Kempton, PA, US)

Application Number: 941596
Filing Date: 1978-09-12
Publication_date: 1980-05-13
Assignee: Performance Industries, Inc. (Kempton, PA)
Primary Class(es): 123/73R 123/73A
Other Classes:
US Patent Ref:

3107659	Oct, 1963	Steinlein et al.	123/73.
3687118	Aug, 1972	Nomura	123/73.
3905340	Sep, 1975	Boyesen	123/73.
3905341	Sep, 1975	Boyesen	123/73.
4000723	Jan, 1977	Boyesen	123/73.
4051820	Oct, 1977	Boyesen	123/73.
4062331	Dec, 1977	Boyesen	123/73.
4143626	Mar, 1979	Boyesen	123/73.
4161163	Jul, 1979	Boyesen	123/73.

Other Refs:
Primary Examiner: Burns, Wendell E.
Assistant Examiner:
Attorney: Synnestvedt; John T., Synnestvedt; Kenneth P.