VEHICULAR CRAWL MODE DECELERATION CONTROL

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 selec...

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Bibliographische Detailangaben
Hauptverfasser:	Creehan James S, Shaub Paul S, Kohls Mark C, Modisett W. Marc, Rizzo Michael D
Format:	Patent
Sprache:	eng
Schlagworte:	ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL PERFORMING OPERATIONS PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OFVEHICLES TRANSPORTING VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES VEHICLES IN GENERAL
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Beschreibung
Zusammenfassung:	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.