Gm Global Technolgoy Operations, Inc.

Detlev Schäfer

Chandra S Namuduri

Michael G Reynolds

Kenneth J Shoemaker

Timothy P Philippart

Scott Joseph Chynoweth

Danny Y Mui

James F Crawford

Shawn L Boozer

Theo L Moreno

A starter relay connects a battery with a starter motor of an engine when in a closed state and disconnects the starter motor from the battery when in an open state. A switching device provides current to the starter relay when in a closed state and disables current flow to the starter relay when in an open state. For an engine startup event, a switch control module: transitions the switching device to the closed state for a first predetermined period; transitions the switching device to the open state for a second predetermined period after the first predetermined period; and transitions the switching device to the closed state for a third period after the second predetermined period. The starter relay remains in the open state during the first predetermined period and transitions to the closed state when the switching device is in the closed state for the third period.

Driver output encoding systems and methods

An electrical system includes a battery for providing electrical power to a starter mechanism and an auxiliary load of a hybrid-electric vehicle. An electric double-layer capacitor ('EDLC') is electrically connectable to the battery and the auxiliary load. A separation switch is electrically connected between the battery and the EDLC for electrically separating the battery from the EDLC and the auxiliary load. The separation switch is opened in response to the voltage across the battery being less than the voltage across the EDLC.

Electrical system and method for a hybrid-electric vehicle

Growing community of inventors

Dexheim, Germany

Detlev Schäfer