Patent · US Expired

Method for warming-up an internal combustion engine

US6766790B2 · kind B2 · utility

3Cited by

11References

11Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Gerd Grass · Schwieberdingen, DE
Ruediger Weiss · Metzingen, DE

Key dates

Filing date	Sep 3, 2002
Grant date	Jul 27, 2004
Priority date	—
Expiry date	Sep 3, 2022

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02D41/06
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

An internal combustion engine, especially of a motor vehicle, is described wherein fuel can be injected into an intake manifold or into a combustion chamber during warm up. A control apparatus is provided for determining a warm-up factor (fWL) for increasing the injected fuel quantity below an operating temperature of the engine. With the control apparatus, the warm-up factor (fWL) is determined from a base factor (fG) and a load-dependent factor (fLA).

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