Claims:We Claim:
1. A drive train (100) for a vehicle, said drive train 100 comprising:
a diesel engine (102), said engine adapted to drive an electrical generator (104);
said electrical generator (104) in electrical communication with a power bank (106);
said power bank (106) adapted to supply electrical energy to an electric motor (108); and
said electric motor (108) adapted to provide power to at least one wheel (110) of said vehicle.

2. The drive train (100) of claim 1, wherein said power bank (106) is a battery.

3. The drive train (100) of claim 1, wherein said electric motor (108) provides power to rear wheel (110) of said vehicle.

4. The drive train (100) of claim 1, wherein said electric motor (108) provides power to front wheel of said vehicle.

5. The drive train (100) of claim 3 and 4, wherein said electric motor provides power to said front wheel and said rear wheel (110) of said vehicle.
, Description: Complete Specification:

The following specification describes and ascertains the nature of this invention and the manner in which it is to be performed.
Field of the invention
[0001]This invention relates to a drive train for a vehicle.

Background of the invention
[0002] For three wheeler vehicles using diesel engine with mechanical fuel injection system, in order to comply with higher emission norms like Bharat Stage VI, there may be a need to use common rail fuel injection system and exhaust gas treatment which in some cases may be not feasible due to price sensitive segment. Converting these vehicles into electric vehicles involves considerable cost mainly due to electrical battery pack. Hence, there is a need to use both diesel engine and electrical system for these three wheeler vehicles by harnessing the benefit of both the technologies without replacing mechanical fuel injection system which is cost effective and achieving the emission norms.

[0003]Prior art patent application US2009025027 discloses hybrid-electric vehicle comprising an electric motor, at least one battery pack, at least one capacitor bank, at least one generator, at least one engine, and a controller, wherein the controller is coupled to the at least one battery pack, the at least one capacitor bank and the at least one engine. Power systems are also disclosed, wherein the power systems include: at least one battery pack, at least one capacitor bank, at least one generator, and a controller, wherein the controller is coupled to the at least one battery pack, the at least one capacitor bank and the at least one generator. In addition, modified gear boxes are disclosed that include: an epicyclical roller arrangement and a control mechanism coupled to an output shaft.

Brief description of the accompanying drawing
[0004] Different modes of the invention are disclosed in detail in the description and illustrated in the accompanying drawing:

[0005] FIG. 1 illustrates a drive train for a vehicle.

Detailed description of the embodiments
[0006] FIG. 1 illustrates a drive train 100 for a vehicle. The drive train comprises a diesel engine 102, the diesel engine 102 is adapted to drive an electrical generator 104. The electrical generator 104 is in electrical communication with a power bank 106. The power bank 106 is adapted to supply electrical energy to an electrical motor 108, and the electrical motor 108 is adapted to provide power to at least one wheel 110 of the vehicle. In an embodiment the electric motor provides power to rear wheel 110 of the vehicle. In an embodiment the electric motor 108 provides power to front wheel (not shown) of the vehicle. In an embodiment the electric motor provides power to both front wheel and rear wheel 110 of the vehicle. In an embodiment the power bank 106 may be a battery.

[0007]The configuration of the drive train 100 will be explained in further detail. The drive train 100 disclosed herein makes use of a diesel engine 102 to provide power to an electrical generator 104. The electrical generator 104 is in electrical communication with a power bank 106. The power bank 106 may be a battery. The power bank 106 is adapted to supply electrical energy to an electric motor 108, and the electric motor 108 is adapted to provide power to rear wheels 110 of the vehicle.

[0008]During working, the diesel engine 102 drives the electrical generator 104, electrical generator 104 in electrical communication with the power bank 106. The power bank 106 is adapted to supply electrical energy to an electric motor 108. The electric motor 108 is adapted to provide power to rear wheels 110 of the vehicle.

[0009]From the above explanation it is clear that the disclosed diesel engine 102 now drives an electrical generator 104. The diesel engine 102 may be tuned to operate at one constant speed and load condition (where it has optimum performance, emission and fuel consumption) and continuously charges the power bank 106. The speed and load condition of the diesel engine is arrived at depending upon the type of vehicle. Because the diesel engine runs at constant speed to charge the power bank 106, this makes it easier to control emissions from diesel engine 102 in comparison to a diesel engine 102 that operates under variable load and generates exhaust (emission) in dependence of the load.

[0010] The advantages of the drive train 100 are (a) use of common rail system is avoided (b) minimum exhaust gas treatment is required since it is the electric energy of the motor 108 that is driving the wheels of the vehicle and diesel engine 102 operates at constant load (c) very small battery is sufficient as the diesel engine 102 continuously charges the battery 106 (d) with the above mentioned drive train 100, the diesel engine 102 would run at only one optimum point where there is a possibility to optimize both fuel injection configuration so as to get the best possible performance in terms of emissions and fuel consumption (e) the need for a gear box is eliminated.

[0011]It should be understood that embodiments explained in the description above are only illustrative and do not limit the scope of this invention in terms of the type vehicle. Many such embodiments and other modifications and changes in the embodiment explained in the description are envisaged. The scope of the invention is only limited by the scope of the claims.