Control method for a vehicle engine assigned to a fluid clutch device with a clutch

• Main Authors: TAKADA, AKIO, KYOTO, JP, OYAIDE, SADAMU, OKAZAKI, AICHI, JP, SHIMAZAKI, TATSUYA, KYOTO, JP, NAGAYOSHI, YOSHIMASA, KYOTO, JP, MARUYAMA, IKUO, KAMEOKA, KYOTO, JP, KONNO, YOSHIHIRO, KYOTO, JP, NAKAMURA, HISAJI, KYOTO, JP, KATO, KOICHI, YOKOHAMA, KANAGAWA, JP
• Format: Patent
• Language: English; German
• Published: 23.03.1995
• Edition: 6
• Subjects: 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; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; 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; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; THERMAL INSULATION IN GENERAL; TRANSPORTING; VEHICLES IN GENERAL; WEAPONS

The control method is intended for a motor vehicle engine (10). The engine is assigned to a fluid clutch device (20) with a clutch (28). The first step in the control method is to detect the engagement state of the clutch (28). In a next step (S225, S325), it is determined whether or not the vehicle is in a predetermined decelerated operating state. If it was determined that the clutch (28) is in the predetermined engagement state and it has been additionally determined that the vehicle is in the predetermined decelerated operating state, the output power of the engine (10) is increased in a following step (S234, S334). By means of this control method, it is possible to prevent the engine (10) from dying even if the clutch (28) is engaged at the time of a deceleration.