Hybrid cooling system of an internal combustion engine

US8893669B2 · kind B2 · utility

Assignee

• Ford Global Technologies, LLC · US

Inventors

• Jan Mehring · Cologne, DE
• Bernd Steiner · Bensberg, DE
• Carsten Weber · Aalen, DE

Key dates

• Filing date: Oct 21, 2011
• Grant date: Nov 25, 2014
• Expiry date: Dec 28, 2032

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F01P2037/02
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A hybrid cooling system for an engine is provided. The system comprises a block oil cooling circuit, a head coolant cooling circuit, the head and block circuits having a common heat exchanger. The system also includes a flow device in the head cooling circuit for preventing coolant flow in the head cooling circuit at least during a first phase of a warm-up phase of the internal combustion engine, a delivery device in the block cooling circuit which delivers engine oil constantly under pressure through the block cooling circuit to bearing points in a cylinder block and to bearing points in a cylinder head, and a control element arranged in a control line to reduce the delivery capacity of the delivery device through the block cooling circuit at least during the first phase of the warm-up phase. In this way, heat transfer in the common heat exchanger may be substantially prevented.