Control device for operating a road-coupled hybrid vehicle

摘要

A control device is provided for operating a road-coupled hybrid vehicle having a first drive unit assigned to a first axle, a second drive unit assigned to a second axle, and a selector device which can be operated by the driver for manually changing between a purely electric operating mode and an automatic operating mode. At least one electronic control unit controls the drive units at least partially as a function of the operator control of the selector device. The first drive unit has an electric motor and a two-speed transmission which can be shifted automatically and interacts with the electric motor, and the second drive unit has an internal combustion engine and a further transmission which interacts with the internal combustion engine.

主权项

1. A control device for operating a road-coupled hybrid vehicle having a first drive unit assigned to a first axle, a second drive unit assigned to a second axle, and a selector device operable by a driver for manually changing between an electric operating mode and an automatic operating mode, comprising:
at least one electronic control unit configured to control the first and second drive units at least partially as a function of the driver control of the selector device, wherein the first drive unit has an electric motor and a two-speed transmission which is shiftable automatically and interacts with the electric motor, and the second drive unit has an internal combustion engine and a further transmission which interacts with the internal combustion engine, wherein
the at least one control unit is programmed with at least three predefined condition criteria,a change of gear speed from the second gear speed into the first gear speed is initiated when at least one of the at least three predefined condition criteria is met, andthe at least three predefined condition criteria include
a) when the selector device for switching on the electric operating mode was operated by a driver during forward travel and the vehicle velocity is in a defined lower velocity range,b) when the selector device for switching on the electric operating mode was operated by the driver after reverse travel, and forward travel takes place again, orc) when a fuel tank empty signal is present.