A power output apparatus of the invention includes a clutch motor (30) and an assist motor (40) that allow energy output from an engine (50) driven at a driving point of high efficiency to be converted to energy expressed as the product of a revolving speed and a torque of a drive shaft (22) and to be output to the drive shaft (22). In case that a large torque is required, for example, when the vehicle starts on a rising slope or runs at a low speed, the engine (50) is driven at a high-energy driving point having a large torque and a high efficiency. This structure causes large electric power to be generated by excess energy greater than the energy generally consumed and enables a battery (94) to be charged with the large electric power. The power output apparatus of the invention further has functions of predicting the process of charging the battery (94) with the large electric power based on a driving state of the vehicle and topographical information and lowering the remaining charge of the battery (94) in advance according to the requirements. This process effectively prevents the battery (94) from being damaged with excess charging.

Power output apparatus and method of controlling the same

A control device for a vehicular drive system is disclosed as including reverse drive for suppression means operative to preclude output member, such as an output shaft and drive wheels, of an automatic transmission portion from inputting a reverse drive force to a differential portion. This prevents a power transmitting member from rotating in a direction opposite to a rotational direction of the same with a running position being set. This suppresses a first electric-motor rotation speed, determined with an engine rotation speed and a power transmitting member rotation speed based on the relationship on mutually relative rotation speeds in the differential portion, from increasing to a high level. This results in improved durability of a first electric-motor.

Control device for vehicular drive system

A hybrid propulsion system (100) for use in road vehicle operations, which propulsion system includes a power splitting mechanical transmission (108), suitably a three shaft epicyclic gearbox (117, 118, 119), for coupling to a tailshaft (115) of the vehicle; a first drive unit (105) arranged for regenerative operation and coupled to the power splitting mechanical transmission (108); a second drive unit (110) arranged for regenerative operation and coupled, independently of said first drive unit, to the power splitting mechanical transmission (108); a third drive unit (113) for coupling, in parallel to said power splitting mechanical transmission, to the tailshaft; and propulsion control means (122) for coordinating operation of the drive units in accordance with a plurality of predetermined modes corresponding to a driving cycle of the vehicle. Two forms of the invention are disclosed, being suited to non-transit and transit operations, respectively. Methods for the optimal control of the hybrid propulsion system of each form of the invention are also disclosed.

Hybrid propulsion system for road vehicles

One embodiment relates to a hybrid vehicle drive system for a vehicle including a first prime mover, a first prime mover driven transmission, a rechargeable power source, and a PTO. The hybrid vehicle drive system further includes a hydraulic motor in direct or indirect mechanical communication with the PTO and an electric motor in direct or indirect mechanical communication with the hydraulic motor. The electric motor can provide power to the prime mover driven transmission and receive power from the prime mover driven transmission through the PTO. The hydraulic motor can provide power to the prime mover driven transmission and receive power from the prime mover driven transmission through the PTO.

Hybrid vehicle drive system and method and idle reduction system and method

Die Erfindung betrifft ein Antriebssystem, insbesondere fur ein Kraftfahrzeug, mit einem Antriebsaggregat, insbesondere einem Verbrennungsmotor; einer direkt mit der Triebwelle des Antriebsaggregats gekoppelten oder koppelbaren elektrischen Maschine, welche so ausgebildet ist, das sie das Antriebsaggregat im Zusammenlauf aus dem Stand starten kann; und einer automatischen Start-Stop-Steuerung des Antriebsaggregats. Die Erfindung ist auch auf ein Verfahren zum Betreiben eines derartigen Antriebssystems gerichtet.

Antriebssystem, insbesondere für ein Kraftfahrzeug, und Verfahren zum Betreiben desselben

The gearbox incorporates a planetary differential system with components such as sun wheel, planet carrier strip and annulus. An input shaft is coupled to one component and an output shaft to a second one, while a third is coupled to a compression machine which can operate in both directions as a pump or motor, so as to control the speed and direction of rotation of this third component. This machine is connected to a second one of the same type, or to an electrical machine(s) functioning on the four-quandrant principle. The differential gear train has two sun wheels (5, 105) of different diameters, meshing with double planetary pinions (6) on a carrier strip (7), these in turn meshing with an annulus (9). The larger sun wheel is coupled to the input shaft (2), while a power coupling machine (15) is connected via clutches (23), dependent on the output shaft speed (10), either to the output shaft or to the smaller sun wheel (105).

Vehicle drive with differential output gearbox - has two sun-wheels of different dia. meshing with double planetary pinions on carrier strip

The invention provides a hybrid drive for vehicles characterised by the combination of the following features, namely a conventional drive train, comprising a heat engine (1) having a constant mesh or synchromesh gearbox (2) and a clutch (KM) arranged directly between them, having an electric machine (4) which can be operated alternatively to or together with the heat engine (1), in the generator mode feeds a battery (3) or acts as a motor, and the shaft (5) of which is connected to the input shaft (7) of the gearbox (2), at least in certain operating ranges, via a transmission (33, 31, 32, 23, 9) which includes parts (23, 9) present in any case in the gearbox (2). In this way, it is possible to convert a conventional drive train of a vehicle into a hybrid drive by extremely simple and inexpensive means.

Hybrid propulsion for vehicles

The vehicle has three modes of transmission i.e. engine powered, electric powered, and electric powered combined with engine drive. The increase of efficiency of the battery powered electric drive or changeover clutch (KME) disconnects the gear train and enables the electric drive to be applied only to the traction and to the hydraulic pump. When the engine is operating, the generator charges the battery. For electric drive, the generator operates as a motor. The electric drive can be added as a booster for the engine drive. ADVANTAGE/USE - Improved efficiency electric drive, no exhaust emission for use in city centres, clean areas etc. For lift tracks, service vehicles.

Control system for hybrid driven vehicle - has gear trains isolated when operating solely on battery powered electric drive

In order to avoid the necessity of a conventional electric starter motor a hydrostatic starting system for the engine of a motor vehicle is proposed for the engine whose output shaft is connected with a hydromechanical power transmission, composed of a mechanical part and at least two hydrostatic machines. The starter system comprises its own hydraulic accumulator which as regards its filling capacity and power output is designed for starting the engine at least once and a controller which responds to certain halt and operational states of the vehicle. The charging of the hydraulic accumulator takes place during braking of the vehicle via the hydrostatic machines of the power transmission or, if there is insufficient brake power, of an auxiliary device.

Starter system for automatically turning off and restarting a motor vehicle engine

A vehicle, more especially in the form of an articulated omnibus, has a hybrid drive system comprising an IC engine and an electric motor, whose power is transmitted not only to an axle driven by the IC engine but in addition to a further drive axle in order to extend the working life of the transmission axles.

Faust Dipl Ing Hagin

Papers

Vehicle drive with differential output gearbox - has two sun-wheels of different dia. meshing with double planetary pinions on carrier strip

Hybrid propulsion for vehicles

Control system for hybrid driven vehicle - has gear trains isolated when operating solely on battery powered electric drive

Starter system for automatically turning off and restarting a motor vehicle engine

Articulated vehicle selectively driven at two axles from two power sources