Patent · US Active

Method for automatically switching off and starting an internal combustion engine of a motor vehicle with an automatic transmission, during or after an overrun phase

US9322343B2 · kind B2 · utility

1Cited by

4References

18Claims

0Family size

Assignee

Bayerische Motoren Werke Aktiengesellschaft · DE

Inventors

Jan Tribulowski · Wolnzach, DE
Benedikt Klaus · Windach, DE
Andreas Erwied · Munich, DE

Key dates

Filing date	Jun 6, 2014
Grant date	Apr 26, 2016
Priority date	—
Expiry date	Oct 22, 2034

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/40
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

An internal combustion engine in a motor vehicle is automatically shut off and started by way of a start-stop device, wherein an automatic shut-off process is initiated during a coasting operation phase of the internal combustion engine, and an automatic start process is initiated when at least one activation command occurs. For shutting off the internal combustion engine in the coasting operation phase, a gas exchange in cylinders of the internal combustion engine is at least almost completely suppressed and, at the same time, a torque converter lock-up clutch disposed between the internal combustion engine and the transmission for power transmission purposes is actuated such that the torque converter lock-up clutch remains or is at least almost completely engaged.

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