Robert Boschgmbh

Benjin Luo

Thomas Huber

Michael Lehner

Rainer Gasper

Andreas Gutscher

Mehmet-Fatih Sen

Joerg Sigrist

David Jayanth

Martin Pilz

Frank Wauro

The invention relates to a method for operating a drive device () of a motor vehicle, having an internal combustion engine (), an electric machine (), and a dual-clutch transmission (). The dual-clutch transmission () has two clutches (K, K), by means of which the transmission can be connected to the internal combustion engine (). At least the internal combustion engine () is actuated in a driving operation in order to generate a target drive torque, and the clutches (K, K) are actuated in opposite directions for a gear shift. During a gear shift, the electric machine () which is connected to the dual-clutch transmission () without a clutch is actuated such that the electric machine completely or partly generates the target torque at least temporarily.

Method and device for operating a drive device, drive device

Drive mechanism () for a motor vehicle (), comprising a dual clutch transmission () that includes a first powertrain (), which can be connected to a first drive unit () via a first clutch (), and a second powertrain (), which can be connected to the first drive unit () via a second clutch (), the first powertrain () being securely coupled to a second drive unit (); when shifting gears in the dual clutch trans-mission (), the second drive unit () supplies a predefined drive torque.

Drive mechanism for a motor vehicle, and method for operating a drive mechanism for a motor vehicle

A pressure control valve includes a housing, a valve slide guided in the housing, on which at least one inflow control edge is configured, which cooperates with an inflow opening in the housing, a constriction in piston being present adjacent to inflow control edge, which lies at least approximately opposite to a control opening. It is provided that the valve slide have a circumferential annular groove, which lies on the side of the inflow control edge facing away from the constriction and approximately opposite the inflow opening.

Pressure control valve

Pumping units are known to have an inlet channel, opening out into a pumping channel and tapering from an inlet cross section to an outlet into the pumping channel with an outlet cross-section. The flow is deflected through ninety degrees on entry to the pumping channel which induces strong swirling. The transition from the inlet channel into the pumping channel is not optimal for flow. This effect reduces the efficiency of the pumping unit. The inlet flow into the pumping channel is improved in the pumping unit according to the invention and hence efficiency is improved. According to the invention, the outlet is essentially provided in a first quadrant with relation to the inlet cross section and the tapering of the inlet channel essentially occurs in the other three quadrants. The tapering wall of the inlet channel is formed by a plane-generating shape which goes around from one side of the outlet to the other side of the outlet and is shaped to be increasingly flat relative to a plane of the outlet.

Growing community of inventors

Stuttgart, Germany

Benjin Luo