Patent · US Expired

System and method for controling crankshaft position during engine shutdown using cylinder pressure

US7191756B2 · kind B2 · utility

11Cited by

8References

13Claims

0Family size

Assignee

Ford Global Technologies, LLC · US

Inventors

Patrick Phlips · Cologne, DE
Bernd Steiner · Bensberg, DE
Klemens Greiser · Langenfeld, DE
Ulrich Kramer · Bensberg, DE

Key dates

Filing date	Nov 8, 2005
Grant date	Mar 20, 2007
Priority date	—
Expiry date	Nov 8, 2025

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02B75/048
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

Systems and methods for controlling stopping position of a crankshaft during shutdown of a multiple cylinder internal combustion engine influence cylinder pressure independent of associated intake/exhaust valves during shutdown of the engine so the crankshaft stops in a position favorable for restarting. Embodiments include an engine having variable compression ratio cylinders with the compression ratio of the cylinders controlled to vary cylinder pressure during shutdown to control stopping position of the crankshaft, or an auxiliary control valve disposed in a cylinder wall to control pressure within the cylinders during shutdown so the crankshaft stops in a position desirable for restarting.

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