摘要:
A mode establishing section of a differential limiting control apparatus for a four wheel drive vehicle commands an automatic mode control section or a manual mode control section to output calculated clutch torques according to a signal from a mode switch operated by a driver. In an initial condition of an ignition switch turned on, the execution command is issued to the automatic mode control section, until the driver newly selects the manual mode through the mode switch. Further, when the vehicle travels at a speed higher than a preestablished threshold value, the execution command is outputted to the automatic mode control section, irrespective of the signal from the mode switch.
摘要:
A system for controlling an automated mechanical change-gear transmission system including a processing unit for processing inputs according to predetermined logic rules to determine currently engaged and allowably engaged gear ratios and throttle positions, for changing between automatic and semi-automatic transmission modes, for issuing command output signals to non-manually controlled operators, and for temporarily selectively overriding a pre-selected transmission mode if either cruise control or power take off are activated.
摘要:
Apparatus for controlling the operation of a vehicle's gear box. The apparatus generates electrical signals which are proportional to the vehicle's speed (23), the speed of the vehicle's engine (27), and the position of the vehicle's throttle (25). These signals are used to compute which gear is to be engaged at any particular instant, and where necessary, gear selection signals (13, 15, 17, 19, 21) are generated. The gear selection signals are used to actuate the vehicle's clutch, and to control solenoids (72, 74) which manipulate the gear box.
摘要:
Method and arrangement for providing an electronic gear shift selector associated with an automatic mechanical transmission for a heavy vehicle. The gear shift selector includes a toggle switch for asserting at least one gear shift request, a counter receiving the at least one gear shift request, and a time delay for preventing communication of the at least one gear shift request from the counter until a predefined time period has passed. A method for communicating a collective gear shift request to a gear box includes asserting one or more gear shift requests with a gear shift selector, communicating the gear shift requests to a counter, determining the collective gear shift requests occurring within a predefined time period, communicating the gear shift requests occurring within the predefined time period to a gearbox.
摘要:
Method and arrangement for automated control of a drive train (10) of a land vehicle to be executed when ground conditions exist that impede the initiation or continuation of travel of the vehicle such as being stuck on loose or slippery ground. The automated routine induces a rocking action in the vehicle purposed to aid in freeing the vehicle and permitting desired travel out of the area. As an initial step of the routine, it is determined whether such a ground condition exists. If so, drive power is applied, via a drive train (10) of the vehicle until the drive wheel (26, 30) bogs down or productive and continuous travel is established in the vehicle. A rocking-back action is permitted by a discontinuation of the drive power to the drive wheel (26, 30) of the land vehicle until a predetermined power resumption condition occurs. Reverse power can be optionally applied at this time. Otherwise, drive power is reapplied to the drive wheel (26, 30) for another attempt at forward progress. All of these actions are controlled via an automated drive train control routine that executes the method, typically responsive to a driver-initiated signal.
摘要:
A system for controlling an automated mechanical change-gear transmission system including a processing unit for processing inputs according to predetermined logic rules to determine currently engaged and allowably engaged gear ratios and throttle positions, for changing between automatic and semi-automatic transmission modes, for issuing command output signals to non-manually controlled operators, and for temporarily selectively overriding a pre-selected transmission mode if either cruise control or power take off are activated.
摘要:
A shift control system for an automatic transmission, comprises: a plurality of frictional engagement means adapted to be hydraulically engaged for setting a plurality of gear stages; and a shift lever for switching an automatic mode, in which a gear stage is set on the basis of the running state of a vehicle, and a manual mode in which a gear stage selected by manipulating the shift lever is set. Further comprised are: a shift detector for detecting that a gear stage should be selected for the shift in the manual mode state: and a shift start timing adjuster for accelerating, if the shift in the manual mode state is detected, the switching rate of the frictional engagement means which are switched for executing the detected shift.
摘要:
A mode establishing section of a differential limiting control apparatus for a four wheel drive vehicle commands an automatic mode control section or a manual mode control section to output calculated clutch torques according to a signal from a mode switch operated by a driver. In an initial condition of an ignition switch turned on, the execution command is issued to the automatic mode control section, until the driver newly selects the manual mode through the mode switch. Further, when the vehicle travels at a speed higher than a preestablished threshold value, the execution command is outputted to the automatic mode control section, irrespective of the signal from the mode switch.