Power plants – Internal combustion engine with treatment or handling of...
Patent
1981-11-13
1984-02-14
Hart, Douglas
Power plants
Internal combustion engine with treatment or handling of...
60282, 291564R, 123193H, F01N 310
Patent
active
044308566
ABSTRACT:
An improved port liner and its method of assembly into a cylinder head of an engine such that an air insulating layer is formed between the outer periphery of the liner and the inner diameter of an exhaust passage. The liner is a thin, stainless steel member having an arcuately-shaped section and a straight section which permits it to be inserted only one way into an exhaust passage. This is important for it allows for automated machine assembly of a valve guide which must be pressed through an opening located in the outer surface of the liner. The method of assembly also limits the physical contact between the liner and the cylinder head and this in conjunction with the air layer reduces the loss of thermal energy from the passing exhaust gases.
REFERENCES:
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patent: 3983696 (1976-10-01), Pflugfelder
patent: 4031699 (1977-06-01), Suga
patent: 4089163 (1978-05-01), Yamazaki
patent: 4120154 (1978-10-01), Yokota
patent: 4195477 (1980-04-01), Yamazaki et al.
patent: 4195478 (1980-04-01), Rao et al.
patent: 4258547 (1981-03-01), Fenn
Society of Automotive Engineers, Inc., "An Analytical Study of Exhaust Gas Heat Loss in a Piston Engine Exhaust Port", by S. D. Hires and G. L. Pochmara, No. 760767, Oct. 18-22, 1976.
Deere & Company
Hart Douglas
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