CONTROL DEVICE FOR VEHICLE POWER PLANT

PROBLEM TO BE SOLVED: To reduce the load caused by the drag of a torque converter and suppress an increase of fuel consumption by controlling a transmission at a neutral position if engine stop conditions are not met when a vehicle is stopped. SOLUTION: In a power plant controller 24 controlling the...

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Bibliographische Detailangaben
Hauptverfasser:	NAGANO SHUJI, KURAMOCHI KOJIRO
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING 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 ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT THERMAL INSULATION IN GENERAL TRANSPORTING VEHICLES IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To reduce the load caused by the drag of a torque converter and suppress an increase of fuel consumption by controlling a transmission at a neutral position if engine stop conditions are not met when a vehicle is stopped. SOLUTION: In a power plant controller 24 controlling the operations of an engine 10 and a transmission 14 receiving its output via a torque converter 12, an engine controller 26 controls the fuel injection quantity according to the engine operation state such as engine revolving speed, intake pipe pressure, vehicle speed, and cooling water temperature and the input action of a driver such as an accelerator pedal action. A transmission controller 28 selects the required shift stage based on the selected travel range and engine operation state. The power plant controller 24 controls the transmission 14 at a neutral position if engine stop conditions are not met when a vehicle is judged to be stopped, thereby the load caused by the drag of the torque converter 12 is reduced, and fuel consumption is suppressed.