Classifications

• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
  • H02K7/006—Structural association of a motor or generator with the drive train of a motor vehicle
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
  • F02B67/00—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for
  • F02B67/08—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of non-mechanically driven auxiliary apparatus

Definitions

• the present invention relates to a drive system for various equipment and accessories associated with a heat engine connected to a mechanical transmission line, in particular a drive system for the equipment of a motor vehicle.
• An object of the invention is to provide a drive system of various equipment and accessories associated with a heat engine, according to an arrangement for improving the compactness of the engine.
• the invention proposes a system for driving various equipment and accessories by a generator function, associated with a heat engine comprising a crankshaft to which a mechanical transmission line is connected, characterized alone.
• the generator function is mechanically connected to the mechanical power generated by the heat engine.
• generating function means any generator or set of generators producing electricity from a mechanical power, such as the engine or any mechanical element involved in the setting in motion of the vehicle such as the gearbox , the wheels or the bridge.
• Said equipment or accessories consuming energy external to the heat engine are electrically powered and connected to an electrical network comprising one or more electrical generators mechanically driven by the heat engine, such as for example an alternator or an alternator-starter.
• the generators will be located in close proximity to the engine, so that the overall size of the engine can be significantly reduced.
• the electric motors that drive said equipment or said accessories can be arranged where you want in the vehicle, it frees these electric motors from thermal stresses due to the proximity of the engine.
• the drive of the equipment and accessories by electric motors makes it possible to adapt the driving speed of said electric motors according to optimal operating conditions of the corresponding equipment or accessories whatever the speed of rotation of the motor, whereas a mechanical drive by a belt associated with the crankshaft made the rotation speed of the equipment dependent on the speed of rotation of the motor, which forces to size accordingly.
• the electric generators are connected to a point of the transmission line downstream of the crankshaft. It is then possible to completely remove the pulley attached to the end of the crankshaft so that the size of the engine is further reduced.
• the heat engine comprises electromagnetic actuators for the electromagnetic valves. This eliminates the timing chain and the corresponding sprockets, which further improves the compactness of the engine.
• At least one generator comprises variable ratio drive means, one can thus choose the gear ratio that is desired for driving the electric motor and thus optimize the latter according to the desired power.
• FIG. 1 is a schematic representation illustrating the various possible implementations of electric generators in connection with a heat engine connected to a mechanical transmission line
• FIG. 2 is a schematic representation of an embodiment of an electrical network in relation to a system according to the invention.
• the invention relates to a drive system for various equipment associated with a heat engine 1 comprising a crankshaft 2 to which is connected a mechanical transmission line generally designated 3 comprising in the illustrated embodiment, a steering wheel inertia 4, a clutch 5, a gearbox 6 having a primary shaft 7 and a secondary shaft 8, and a bridge 9 for the mechanical drive of the wheels 10 of a vehicle.
• a mechanical transmission line generally designated 3 comprising in the illustrated embodiment, a steering wheel inertia 4, a clutch 5, a gearbox 6 having a primary shaft 7 and a secondary shaft 8, and a bridge 9 for the mechanical drive of the wheels 10 of a vehicle.
• the illustrated transmission line comprises only mechanical components
• the expression "mechanical transmission line” also covers, according to the invention, a transmission line comprising a hydraulic component such as a converter in the case of an automatic gearbox, or an electromagnetic clutch.
• the system comprises one or more generators with the general reference 1 1 in Figure 2, and the specific references 1 1 .1, 1 1 .2, 1 1 .3 ... in Figure 1 which illustrates the possible implantations, and mechanical drive modes.
• the generator 1 1 .1 is fixed on the side of the engine block and is rotated in the traditional manner by a belt 12 passing over a pulley 13 fixed to the crankshaft 2;
• the generator 1 1 .2 is fixed to the engine block and is driven by a pinion 14 associated with a variable speed gear box 36, driven by a management unit, not represented as a function of the speed of rotation of the engine, to operate the 1 1 .2 generator in an optimum speed range regardless of the motor rotation speed.
• the pinion 14 meshes with the ring gear 15 fixed to the flywheel 4.
• the generator 1 1 .3 is a generator-pancake whose rotor is fixed to the flywheel 4 and the stator is fixed to the engine block; the generator 1 1 .4 is fixed to the gearbox and is driven by a belt 16 passing over a pulley 17 fixed to the flywheel 4; the generator 1 1 .5 is also a generator-pancake whose rotor is fixed to the input shaft of the gearbox 6 and whose stator is fixed to the gearbox 6.
• the generator 1 1 .6 is driven by a pinion 18 meshing with a pinion 19 carried by the primary shaft 7; the generator 1 1 .7 is driven by a pinion 20 meshing with a pinion 21 carried by the secondary shaft 8; the generator 1 1 .8 is driven by a pinion 22 meshing with the bridge 9; the generator 1 1 .9 is mounted on a wheel shaft and the generator 1 1 .10 is integrated in a wheel.
• the electric generator or generators 1 1 are connected to an electrical network comprising a diode bridge 23 connected in a manner known per se to a high voltage accumulator 24 and a continuous / DC reversible converter 25 it itself connected to a low voltage accumulator 26.
• the network also comprises a not shown management member ensuring the operation of the network according to the demand from equipment connected to the network.
• the generator (s) 1 1 serve not only to power equipment that has traditionally operated with electricity, such as lamps 27, audio system 28, windscreen wipers 29, starter 35 or seat heating.
• the location of the generator (s) 1 1 is preferably chosen to improve the compactness of the motor-transmission unit.
• the invention has been illustrated in Fig. 1 with a generator 1 1 .1 driven by a pulley 13 attached to one end of the crankshaft 2 projecting from the engine block, it is preferable to implement an implementation at a point of the transmission line downstream of the crankshaft, which allows to remove the pulley 13.
• the generator or generators are connected to the flywheel 4, the primary shaft 7 of the gearbox or at an intermediate point between the flywheel and the input shaft to benefit from a drive of the generators from the moment the engine is running even when the vehicle is stopped.
• the system according to the invention not only has the advantage of improving the compactness of the engine block but also makes it possible to operate the equipment at its optimum speed whatever the speed of rotation of the engine. , which improves the efficiency of the equipment and therefore reduces their size.
• the power supply of the equipment makes it possible to arrange the latter in an optimized manner with respect to the function they perform or in relation to the needs of their cooling. This minimizes the risk of deterioration usually resulting from the very high temperature under the hood.
• the system according to the invention also applies to a motor whose valves are controlled in a traditional way by a shaft. to cam, the compactness of the motor is then reduced due to the drive of the camshaft by a timing chain.
• the given examples of implantation of the generators are not limiting, any more than the drive means of these generators.
• a variable drive ratio can be applied to each of the generators depending on its location and the drive ratio can be discretely or continuously variable.

Applications Claiming Priority (2)

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• 2005
  • 2005-09-12 FR FR0509252A patent/FR2890609B1/fr active Active
• 2006
  • 2006-09-12 EP EP06808313A patent/EP1924459A1/de not_active Ceased
  • 2006-09-12 JP JP2008530584A patent/JP2009508058A/ja active Pending
  • 2006-09-12 US US12/066,406 patent/US20090121543A1/en not_active Abandoned
  • 2006-09-12 WO PCT/FR2006/050875 patent/WO2007031683A1/fr active Application Filing

Non-Patent Citations (1)

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