Internal-combustion engines – Lubricators – Crankcase – pressure control
Patent
1991-03-08
1993-10-05
Cross, E. Rollins
Internal-combustion engines
Lubricators
Crankcase, pressure control
123196CP, 184 64, F01M 116
Patent
active
052495566
ABSTRACT:
An adjustable lubricating system for an internal combustion engine such as the Harley-Davidson 74 and 80 cubic inch twin-v engines. An oil pump having a pressure relief valve connected to a plurality of passages adjacent the pump outlet through which pressurized oil flows to lubricate various parts depending upon the positioning of the valve. A pressure relief cap is provided with a bore extending therethrough in which an adjusting screw is positioned. The cap, bore and screw have mating threads allowing the screw to be movably positioned within the bore. The cap has external threads thereon mating with the internal threads of the pressure relief valve bore of the fuel pump of the lubricating system of the engine. An oil seal is provided within the cap bore which engages the screw. The screw engages the pressure relief spring of the pressure relief valve. The spring is positioned between the screw and the valve plunger whereby the distribution of oil to the engine parts to be lubricated is determined by adjusting the position of the screw in the cap bore.
REFERENCES:
patent: 1948479 (1934-02-01), Caminez
patent: 2111242 (1938-03-01), Harley
patent: 2138969 (1938-12-01), Hobbs
patent: 2213147 (1940-08-01), Parkins et al.
patent: 2298646 (1942-10-01), Ovens
patent: 4709671 (1987-12-01), Sumigawa
Darlington, Harley-Davidson Electraglide & Super Glide Owners Manual; pp. 88-90, Haynes Publ.
Harley-Davidson Motor Co., Instructions--Oil Pump Kit, pp. 1-3, rev. Nov. 1984.
Cross E. Rollins
Solis Erick
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