VEHICLE CONTROL SYSTEM

PROBLEM TO BE SOLVED: To provide a vehicle control system capable of reducing output shaft rotational frequency (vehicle speed) of a transmission in accordance with deceleration operation, at the same time, capable of reducing engine speed, and creating no uncomfortable feeling during operation. SOL...

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Bibliographic Details
Main Authors YAMAMOTO SHIGERU, NAKAGAWA TOMOHIRO, FUNATO MASAHIRO, OKADA SHUNICHI
Format Patent
LanguageEnglish
Published 12.05.2005
Edition7
Subjects
BLASTING
CALCULATING
COMBUSTION ENGINES
COMPUTING
CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE ORDIFFERENT FUNCTION
CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES
CONTROLLING COMBUSTION ENGINES
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
ENGINEERING ELEMENTS AND UNITS
GEARING
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLETECHNOLOGY
LIGHTING
MECHANICAL ENGINEERING
PERFORMING OPERATIONS
PHYSICS
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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Summary:PROBLEM TO BE SOLVED: To provide a vehicle control system capable of reducing output shaft rotational frequency (vehicle speed) of a transmission in accordance with deceleration operation, at the same time, capable of reducing engine speed, and creating no uncomfortable feeling during operation. SOLUTION: The vehicle control system having an engine 2 and the hydro-mechanical transmission 1 further comprises a decelerator 60 changing target engine speed according to operating amount of a decelerator pedal 61; hydrostatic transmission part controlling means (40, 42, 43) for controlling a hydrostatic transmission part so as to make actual speed of the engine 2 coincident with the target engine speed; and engine control means (2a, 40, 50) for controlling the engine 2 such that when the target engine speed is changed from a first target value to the other target value lower than the first target value by the decelerator 60, output torque of the engine 2 is reduced, while keeping a ratio of the amount of change in the output torque of the engine 2 to the amount of change in the target engine speed constant or approximately constant. COPYRIGHT: (C)2005,JPO&NCIPI
Bibliography:Application Number: JP20040255835