METHOD AND DEVICE FOR CONTROLLING TRANSMISSION DURING OPERATION OF BRAKE

PROBLEM TO BE SOLVED: To provide a device, a method, and a product for controlling a transmission during the operation of a brake in a machine having an engine and an electronic-controlled transmission. SOLUTION: A method for operating the transmission of a machine during the operation of a brake in...

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Bibliographische Detailangaben
Hauptverfasser:	WULFERT WAYNE J, HUBBARD MILTON C, SCHOENBERG MATTHEW F, GAUGUSH SUSAN J, PALMER MARVIN K
Format:	Patent
Sprache:	eng
Schlagworte:	ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL BLASTING BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL COMBUSTION ENGINES CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE ORDIFFERENT FUNCTION CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES CONTROLLING COMBUSTION ENGINES ENGINEERING ELEMENTS AND UNITS GEARING GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING PERFORMING OPERATIONS PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OFVEHICLES ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT THERMAL INSULATION IN GENERAL TRANSPORTING VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES VEHICLES IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a device, a method, and a product for controlling a transmission during the operation of a brake in a machine having an engine and an electronic-controlled transmission. SOLUTION: A method for operating the transmission of a machine during the operation of a brake includes the step of obtaining the data on a brake pedal position, speed of the machine, engine rotation speed of the machine, present transmission operating gear, and lowest operating gear. Next, a shift- down threshold is set depending on whether the brake pedal position is in a shift-down position or a brake mode. Next, when the speed of the machine and the engine rotation speed of the machine are smaller than the shift-down thresholds and the transmission operating gear is not the lowest operating gear, the transmission is shifted down. Then, when the pedal position is in the neutral mode, the speed is smaller than the neutral threshold speed, and the transmission is at the lowest operating gear, the transmission is set to neutral. Lastly, the step is repeated until the transmission is set to neutral.