Patent · US Active

Method and device for starting an internal combustion engine of a hybrid drive train

US8753246B2 · kind B2 · utility

2Cited by

5References

12Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Thomas Huber · Iffeldorf, DE
Michael Lehner · Gränichen, CH
Oliver Kaefer · Murr, DE
Karsten Mann · Stuttgart, DE

Key dates

Filing date	Apr 28, 2009
Grant date	Jun 17, 2014
Priority date	—
Expiry date	Oct 18, 2031

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/64
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

A method and a device are described for starting an internal combustion engine of a hybrid drive train, having an internal combustion engine and at least one additional machine, in particular an electric machine, a separating clutch, which is situated between the internal combustion engine and the additional machine, and a crankshaft angle sensor for detecting the instantaneous crankshaft angle of the internal combustion engine being provided. Arrangements are provided to perform the following operations to start the internal combustion engine when a high-voltage battery is essentially discharged, including a) the separating clutch is or has already been disengaged, b) the additional machine is accelerated, c) after conclusion of the acceleration operation of the additional machine, the separating clutch is engaged, so that the internal combustion engine is also accelerated, d) as soon as the crankshaft angle sensor system supplies a favorable crankshaft angle, the internal combustion engine is started by direct start.

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