| US 7,565,943 B2 | ||
| Mobile machine with an electric traction motor of a traction drive, an electric pump motor of a hydraulic work system, and fluid cooling | ||
| Udo Herrmann, Johannesberg (Germany); Alfred Langen, Groβostheim (Germany); Klaus Schillings, Langenselbold (Germany); Volker Schreiber, Niedernberg (Germany); and Bernward Welschof, Groβostheim (Germany) | ||
| Assigned to Linde material Handling GmbH, Aschaffenburg (Germany) | ||
| Filed on Sep. 22, 2006, as Appl. No. 11/525,523. | ||
| Claims priority of application No. 10 2005 045 414 (DE), filed on Sep. 23, 2005. | ||
| Prior Publication US 2007/0227691 A1, Oct. 04, 2007 | ||
| Int. Cl. B60H 1/00 (2006.01) | ||
| U.S. Cl. 180—305 [180/306; 180/367] | 10 Claims |
| 1. A mobile machine, comprising:
heat-emitting drive components of a traction drive and a hydraulic work system, wherein the traction drive comprises at least
one electric traction motor and a traction motor control system, wherein the hydraulic work system comprises at least one
electric pump motor and a pump motor control system, and wherein at least some of the drive components are located in a cooling
circuit that is connected to the hydraulic work system and can be cooled by fluid from the hydraulic work system,
wherein the cooling circuit includes a cooling device connected on an output side with the traction motor, the pump motor,
the traction motor control, and the pump motor control system, and
wherein the cooling device can be selectively connected on an input side, depending on fluid temperature in a reservoir of
the hydraulic work system, to the reservoir or to a return line from the heat-emitting drive components.
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