Oil pump drive arrangement for a piston internal-combustion engine and method of making same

US5063895A · kind A · utility

Assignee

• Dr. Ing. h.c. F. Porsche AG · DE

Inventor

• Herbert Ampferer · Sachsenheim, DE

Key dates

• Filing date: Oct 16, 1990
• Grant date: Nov 12, 1991
• Expiry date: Oct 16, 2010

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02B2275/18
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

The lubricating-oil circulating system of a piston internal-combustion engine is supplied by a main oil pump arranged in the oil pan and driven by the crankshaft. A second oil pump, which is also driven by the crankshaft, supplies hydraulic pressure to hydraulic camshaft rotating devices. The second oil pump is integrated in an intermediate timing gear and is driven by it, the camshafts being driven by the crankshaft by way of this intermediate timing gear.