Engine cylinder deactivation to improve vehicle interior heating and defrosting
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 7, 2004
Grant Date -
Jun 5, 2003
app pub date -
Nov 25, 2002
filing date -
Nov 30, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention employs cylinder deactivation hardware and control systems to increase the heat rejected to the engine cooling system to improve heating of an internal combustion engine and a passenger compartment of a vehicle. The heat rejected to the cooling system is a result of an increase in combustion temperatures in the non-deactivated cylinders, due to increased work. The invention also includes a system to reduce the cooling system heat capacity. The invention provides heat quickly after a cold start and while operating at low engine operating points. This method and system are particularly suited to compression-ignition engines and direct-injection spark ignition engines that primarily operate lean of stoichiometry.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully