摘要:
A method of operating a multi-mode drive system that precisely orchestrates a shift between gear ratios in a power take off unit and a rear drive module. The method first shifts between gear ratios in the power take off unit and then, depending upon the success or failure of the shift of the power take off unit, shifts between gear ratios in the rear drive module.
摘要:
A method and transmission control unit configured to improve shift event performance in a vehicle with an automatic transmission by determining a vent time for release of a clutch assembly in a transmission of a vehicle. The vehicle must be stopped and a gear selector in the vehicle must be set to a drive condition. If these conditions are met, the clutch assembly is vented. The vent time from when venting begins to when a turbine (or input shift) speed of the transmission rises is tracked. Once the turbine speed of the transmission rises, the clutch assembly is reapplied. The clutch assembly vent time is set based on the tracked vent time.
摘要:
A system and method for detecting that a four-wheel drive manual transmission vehicle is being operated in a manner that could cause a clutch over-speed problem. Upon detecting that the vehicle is being operated in the manner that could cause the clutch over-speed problem, the system and method activate a braking countermeasure to remove the potential problem. In addition, a fault code may be stored for subsequent diagnostic measures and/or a fault indicator may be used to alert the driver of the problem.
摘要:
A hybrid dual configuration transmission for a vehicle having an electric motor, planetary gear set and a plurality of gear meshes is disclosed herein. The hybrid dual configuration transmission provides for a plurality of electrically variable transmission operating modes and a plurality of fixed gear operating modes. The hybrid dual configuration transmission may be operated utilizing exclusively the electric motor, exclusively an engine, or any combination of the electric motor and engine.
摘要:
A method and apparatus for controlling a vehicle engine during conditions detrimental to the engine such as e.g., high engine speed with high oil temperature and/or low oil pressure. In addition to protecting the engine, the method and apparatus will also improve the vehicle's fuel economy.
摘要:
A reclining seat assembly includes a seat frame, a backrest frame supported by the seat frame for pivoting movement about a backrest pivot axis, a seat pan, and a backrest recline angle adjuster. The seat pan has a forward portion supported by the seat frame for relative longitudinal movement. The seat pan has a rearward portion pivotally supported by the backrest frame for pivotal movement about a rear seat pan pivot axis. The backrest frame reclines relative to the seat frame upon forward longitudinal movement of the rear seat pan pivot axis relative to the seat frame. The backrest recline angle adjuster is coupled to the backrest frame. The adjuster maintains the rear seat pan pivot axis in a selected one of a plurality of longitudinal positions relative to the seat frame to thereby achieve a desired backrest inclination.
摘要:
A rocker arm assembly to provide either cylinder deactivation or reduced valve lift. The rocker arm assembly includes inner and outer portions that are rotatably connected to one another. In one state, the inner and outer portions are locked together to provide traditional valve lift. In a second state, the inner portion is allowed to rotate relative to the outer portion to deactivate the cylinder or provide reduced valve lift. Bearings on both the inner and outer portions provide rolling contact with corresponding cam shaft features. A hydraulic system provides transition between the first and second states.
摘要:
A seat assembly for a vehicle having a floor can include a seat bottom, a seat back, a pair of front legs and a pair of rear legs. The seat bottom can have a seating side and an opposite lower side facing the floor. The front legs can be pivotably coupled to the vehicle and to the seat bottom via releasable locking mechanisms. The rear legs can be pivotably coupled to the seat bottom and releasably coupled to the vehicle. A pair of linking members can pivotably couple the front and rear legs to each other. The seat assembly can be movable from a deployed to a stowed position whereby the seat bottom can be pivoted forward about the front and rear legs while maintaining the seat bottom lower side facing the floor and the front and rear legs pivotably coupled to the vehicle and the seat bottom.
摘要:
A system and method of controlling first and second electric motors of a vehicle having an electrically variable transmission during an engine start/stop operation. The system and method determine an input speed profile and an input acceleration profile based on an optimum engine speed, determine a requested output torque based on a plurality of torque limits and a desired output torque, determine first and second feedforward motor torques based on a requested output torque and the input speed and input acceleration profiles, determine first and second feedback motor torques based on a difference between the input speed profile and an actual input speed, and using the feedforward and feedback first and second motor torques to control the operation of the first and second electric motors when an engine is being turned on or off.