Patent · US Expired

Valve control of internal combustion engines by means of a rotary piston pump with unequal pumping output

US4896633A · kind A · utility

11Cited by

9References

6Claims

0Family size

Assignee

Interatom GMBH · DE

Inventors

Ewald Junghans · Bensberg, DE
Gabriel Tittizer · Langenfeld, DE

Key dates

Filing date	Aug 26, 1988
Grant date	Jan 30, 1990
Priority date	—
Expiry date	Aug 26, 2008

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF01L9/10
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A rotary piston pump assembly includes a rotary piston pump having first, second and third sectors. Pistons successively pass through the first, the second and the third sectors during one rotation. The pump has a pump output equal to zero during passage of the pistons through the first sector.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.