A method of controlling the timing of the shift events of a dual clutch transmission that includes the steps of sensing the current output speed of the transmission, determining the time required to complete each possible shift event within the transmission, and determining an output speed modification value for each possible shift event. The method also includes the steps of determining a modified shift point output speed for each possible shift event by summing the determined output speed modification value with a predetermined shift pattern output speed, and commanding the shift when the current output speed reaches the determined modified shift point output speed.

Method of controlling a dual clutch transmission

In order to suppress deposition of constituent of a reducing agent (dissolved matter) in an exhaust passage of an engine enhancing an elimination rate of NOx even when temperature of an exhaust emission from the engine is low, an exhaust emission purifying apparatus is provided with an electro-generative-heat carrier provided on an upstream side of an injection nozzle that supplies the reducing agent into the exhaust emission on upstream side of a reduction catalyst in an exhaust pipe, the exhaust emission being heated to a temperature equal to or higher than a melting point of the dissolved matter whereby deposition of the dissolved matter on an inner wall surface of the exhaust pipe is suppressed to effectively use the supplied reducing agent for catalytic reduction reaction, even when the exhaust emission temperature is lower than the melting point of the dissolved matter of the reducing agent.

Exhaust emission purifying apparatus for engine

A vehicle driving force control apparatus controls a control torque command of an electric motor based on a power supplying condition of an electric power source. The power source supplies electric power to the electric motor that drives at least one wheel of the vehicle. An electric power supplying status detecting section determines an electric power supplying capacity of the electric power source based on the power supplying condition of the power source, while an electric motor torque control section controls the control torque command of the electric motor based on the power supplying condition determined by the electric power supplying status detecting section. Preferably, an internal combustion engine that drives at least one other wheel also drives a generator that acts as the power source of the electric motor. The vehicle driving force control apparatus is especially useful in a four-wheel drive vehicle.

Vehicle driving force control apparatus

An improved vehicle cooling system is disclosed having the capability of controlling various thermal components of the system to effectively control the heating and cooling of an engine of the vehicle based on instantaneous vehicle and ambient conditions and also based upon predictive conditions. These predictive conditions can include information about the upcoming terrain of the route along which the vehicle will travel.

Predictive auxiliary load management (palm) control apparatus and method

Die Erfindung betrifft ein Verfahren zum Betreiben eines Antriebsstrangs eines Kraftfahrzeugs, wobei der Antriebsstrang einen Hybridantrieb mit einem Verbrennungsmotor und einem Elektromotor, ein zwischen dem Hybridantrieb und einem Abtrieb angeordnetes Getriebe und eine zwischen dem Verbrennungsmotor und dem Elektromotor angeordnete Kupplung umfasst, wobei dann, wenn ausschlieslich der Elektromotor antreibt, der Verbrennungsmotor dadurch gestartet werden kann, dass die zwischen dem Verbrennungsmotor und dem Elektromotor angeordnete Kupplung geschlossen wird. Erfindungsgemas wird dann, wenn der Elektromotor dauerhaft bzw. ohne Zugkraftunterbrechung an den Abtrieb gekoppelt ist und die Drehzahl des Elektromotors groser als eine Startdrehzahl des Verbrennungsmotors ist, zum Starten des Verbrennungsmotors die zwischen dem Verbrennungsmotor und dem Elektromotor angeordnete Kupplung derart gesteuert geschlossen und geoffnet, wobei die Kupplung durch teilweises Schliesen in Schlupf gebracht wird, um den Verbrennungsmotor zu starten, und dass anschliesend dieselbe wieder vollstandig geoffnet wird, und zwar vor Erreichen einer Synchrondrehzahl zwischen Verbrennungsmotor und Elektromotor.

Verfahren zum betreiben eines antriebsstrangs

The invention relates to a method for facilitating hill-starting of a stationary motor vehicle, which method comprises the following steps: - at least one braking device is applied using a brake pedal, - a control unit (30) estimates the traveling resistance of the vehicle, - the control unit (30) determines a starting gear, a starting torque and a starting speed with regard to said estimated traveling resistance, - the driver releases a brake pedal, the brakes being kept applied for a certain time, - the driver operates an accelerator pedal to a position at least corresponding to said minimum transmitted torque, - a clutch device (2) for a gearbox (3) is activated by the control unit (30) when the starting speed has been achieved, - the control unit (30) releases the braking devices as a function of the increase in the transmitted, driving torque of the clutch. The invention also relates to a device for implementing the method.

Method and device for hill start

A method and a system for automatic freewheeling of a vehicle, where in the vehicle is arranged a speed-lowering arrangement, including an engine, a wheel driven by the engine via an automated stage-geared gearbox, a gas pedal for regulating the driving torque of the engine, and a control unit. The control unit is arranged to, when the freewheel function is activated and in the presence of an input signal indicating that a predetermined vehicle speed limit is exceeded, to automatically deactivate the freewheel function and brake the vehicle with the speed lowering arrangement. The control unit is arranged to reactivate the freewheel function in the presence of an input signal indicating that the vehicle speed has fallen to close to the predetermined vehicle speed limit. The future progression of the vehicle may be simulated with a view to optimizing the freewheel function in terms of good fuel economy and/or increased comfort.

Method and system for automatic freewheeling of vehicle

A vehicle with a combustion engine (1) that has valves (7,8) with variable valve timing and/or valve lift height. The valves are provided with operating devices (9,10) that are controlled by electronic controlling devices (3), which are arranged, while the vehicle is being driven, with the aid of entered information about at least the gradient of the road and the throttle position, to calculate future resistance to forward motion and the period of time to a future transient in the engine's operating condition, for example in association with a future change of engine operating mode and/or a future gear change in a gearbox (2) connected to the engine. The controlling devices are arranged to control valve timing and/or the valve lift height during said period of time for optimization of the engine's performance, once the transient has arisen.

Method for controlling the adjustment of the valves in a combustion engine with variable valves and a vehicle with such an engine with electronic controlling device for the valve control

The present invention relates to a motor vehicle with a clutch (3) and an automated transmission (9) between the engine and the drive wheels of the vehicle. The vehicle has a first electronic control unit (48) for controlling the engine, a second electronic control unit (45) for controlling the transmission, depending on a set position of a manual gear selector (46). The second control unit, with the gear selector in position for automatic shifting, selects a gear for starting off or under way, which is determined by the gear selection strategy stored in the second control unit as a function of various parameters fed into the second control unit. The invention is characterized in that the second control unit is disposed, at starting off or under way, to continuously perform computer simulations, at least on the basis of information on road incline and throttle opening position, of the future travel of the vehicle, for a set of different combinations of shifts rpm:s and shift increments. This is in accordance with a criterion selected automatically or manually by the driver, using a switch. The second control unit selects out a shifting schedule which will be optimal in accordance with the selected criterion.

Motor vehicle having an automated transmission

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.

Marcus Steen

Papers

Method and device for hill start

Method and system for automatic freewheeling of vehicle

Method for controlling the adjustment of the valves in a combustion engine with variable valves and a vehicle with such an engine with electronic controlling device for the valve control

Motor vehicle having an automated transmission

Method and arrangement for automated control of a vehicular drive train