Systems and methods for controlled shutdown and direct start for internal combustion engine

US7856954B2 · kind B2 · utility

Assignee

• Ford Global Technologies, LLC · US

Inventors

• Bernd Steiner · Bensberg, DE
• Ulrich Kramer · Bensberg, DE
• Klemens Greiser · Langenfeld, DE
• Patrick Phlips · Cologne, DE
• Harald Stoffels · Cologne, DE
• Torsten Sude · Cologne, DE

Key dates

• Filing date: Dec 7, 2009
• Grant date: Dec 28, 2010
• Expiry date: Dec 7, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T74/2132
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

Systems and methods for controlling shut down of a multiple cylinder internal combustion engine include a mechanical energy storage device to decelerate an engine crankshaft to a stopping position desirable for restarting of the engine. Energy stored during shut down may be used to adjust or reposition the crankshaft to one of a plurality of angular orientations advantageous for restarting, and/or used to rotate the crankshaft during restarting of the engine. A flywheel having a variable mass, such as provided by two or more segments, which may be fixedly or selectively coupled to one or more springs may be used to selectively store and release energy.