摘要:
The invention relates to a system and a method for clutch slip protection in a vehicle driven by motor (1), the clutch (2) being arranged in a torque transmission path of the motor (1), wherein the vehicle further includes an output adjustment means (9) arranged to adjust the output power of the motor (1). According to the invention a gear ratio value of the gear box is estimated (30); the occurrence or non-occurrence of clutch slip is established (32); and the present engine torque is controlled to obtain cessation of the clutch slip (34). The invention further relates to a computer program (24) for an electronic control unit (25), a computer program product comprising computer readable medium (21) and the computer program (24), and an electronic control unit (25) of a vehicle comprising the computer program (24).
摘要:
A gear position in an automotive gearbox is detected on the basis of measuring a value indicative of the speed of a rotating shaft between an engine (11) and the gearbox (4), and a value indicative of the speed of an output shaft (9) from the gearbox, and calculating a quotient of these two speeds. If for a predetermined period of time the quotient is between upper and lower limits about a quotient value pertaining to the respective gear position, it is decided that a gear position obtains. Information about a selected split position of a split gear is used to rule out as possible gear positions all gear positions which do not correspond to the selected split position, thereby enabling said upper and lower limits to be raised and lowered respectively for the remaining gear positions which correspond to the selected split position.
摘要:
A gear position in an automotive gearbox is detected on the basis of measuring a value indicative of the speed of a rotating shaft between an engine (11) and the gearbox (4), and a value indicative of the speed of an output shaft (9) from the gearbox, and calculating a quotient of these two speeds. If for a predetermined period of time the quotient is between upper and lower limits about a quotient value pertaining to the respective gear position, it is decided that a gear position obtains. Information about a selected split position of a split gear is used to rule out as possible gear positions all gear positions which do not correspond to the selected split position, thereby enabling said upper and lower limits to be raised and lowered respectively for the remaining gear positions which correspond to the selected split position.
摘要:
The invention relates to a system and a method for clutch slip protection in a vehicle driven by a motor (1), wherein the vehicle includes an output adjustment means (9) arranged to adjust the output power of the motor (1). According to the invention, if the occurrence of clutch slip is detected, the present engine torque is reduced in order to obtain cessation of said clutch slip; a value corresponding to the energy loss in the clutch caused by said clutch slip is calculated; and the reduced engine torque is maintained during a cool down period, wherein the length of said cool down period is based on said value corresponding to the energy loss. The invention further relates to a computer program (24) for an electronic control unit (25), a computer program product comprising computer readable medium (21) and the computer program (24), and an electronic control unit (25) of a vehicle comprising storage means (21) comprising the computer program (24).