Process for cooling drive components and heating the passenger compartment of a motor vehicle, especially an electrically driven vehicle, and arrangement for implementing the process

US5725048A · kind A · utility

Assignee

• Behr GmbH & Co. · DE

Inventors

• Roland Burk · Stuttgart, DE
• Thomas Heckenberger · Echterdingen, DE
• Hans-Joachim Krauss · Stuttgart, DE
• Michael Loehle · Jeffery Road, DE

Key dates

• Filing date: Aug 11, 1993
• Grant date: Mar 10, 1998
• Expiry date: Aug 11, 2013

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60H1/00392
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

In vehicles having drive systems with a highly variable degree of heat generation but in which the total quantity of heat generated is small, the heat given off is inadequate to warm the vehicle properly. The cooling system must nevertheless be designed for the worst-possible operating point, i.e. the greatest amount of heat generated, even if it is generated only briefly. It is the purpose of the present development to make the best possibly exergetic use of the available energy sources while ensuring that the drive components are cooled. The air extracted from the passenger compartment (1) comprises a proportion of exhaust air and one of recirculated air, where the recirculated air is heated in the heat exchanger (9) for the cooling circuit (16) of the drive system and taken to the passenger compartment. The system is particularly suitable for electric vehicles, vehicles with hydrogen and hybrid drives and vehicles developing little heat.