公开(公告)号：US20160244039A1

公开(公告)日：2016-08-25

申请号：US14795252

申请日：2015-07-09

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Michael D. Rizzo ,  James S. Creehan ,  Paul S. Shaub ,  W. Marc Modisett ,  Mark C. Kohls

IPC: B60T8/32 ,  B60T7/12

CPC classification number: B60T8/322 ,  B60K31/00 ,  B60T7/12 ,  B60T8/1769 ,  B60T2201/06

Abstract: A vehicle includes an engine, an accelerator pedal, transmission, transfer case, mode selection device, road wheels, an electronic brake assembly, and a controller. The transfer case is connected to the transmission, and is operable for establishing a predetermined transfer case mode. The mode selection device receives a requested crawl mode of the vehicle in the predetermined transfer case mode. The electronic brake assembly has a brake motor and brake calipers, with each brake caliper disposed proximate a respective wheel to brake the respective road wheel. The controller is programmed to simulate a four-wheel drive-low mode of the transfer case in response to the requested crawl mode by decelerating the vehicle via control of the brake assembly and limiting a gear state of the transmission to 1st or 2nd gear. An auto-hold state may be engaged in crawl mode when the vehicle stops to prevent rolling of the vehicle.

Abstract translation: 车辆包括发动机，加速器踏板，变速器，分动箱，模式选择装置，车轮，电子制动组件和控制器。 传送箱连接到传输，并且可操作用于建立预定的传送箱模式。 模式选择装置以预定的传送箱模式接收车辆的所请求的爬行模式。 电子制动器组件具有制动马达和制动卡钳，每个制动钳布置在相应的车轮附近，以制动相应的车轮。 控制器被编程为通过控制制动器组件来减速车辆，并且将变速器的档位状态限制在1档或2档，来响应于所请求的爬行模式来模拟传送箱的四轮驱动低模式。 当车辆停止以防止车辆的滚动时，自动保持状态可以进行爬行模式。