Hy­brid pow­er­train will drive fu­ture au­to­mo­biles in In­dia

Auto components India - - COVER STORY - Text : Anusha B

The au­to­mo­tive com­pa­nies are for­mu­lat­ing their strate­gies to abide by the emis­sion norms out­lined by the Gov­ern­ment of In­dia. The com­pa­nies have to carry out the BS VI norms in 4 years. Hy­brid and elec­tric ve­hi­cles are the avail­able and ac­cepted op­tions. A hy­brid ve­hi­cle is a com­bi­na­tion of in­ter­nal com­bus­tion en­gine and elec­tric mo­tor.

When hy­brid ve­hi­cles start ply­ing on the roads, 50% of the fuel con­sump­tion, and hence toxic emis­sions, can be re­duced. The elec­tric ve­hi­cles are vi­able, but it is very dif­fi­cult to ex­tract enough power and the in­fras­truc­ture (charg­ing sta­tion) is not avail­able across the coun­try.

The hy­brid driv­e­train or the pow­er­train is dif­fer­ent from the nor­mal ve­hi­cles. The pow­er­train com­po­nents of the hy­brid ve­hi­cle are IC en­gine, elec­tric mo­tor, bat­ter­ies and trans­mis­sion. The space of the in­ter­nal com­bus­tion en­gine is shared by both the diesel/petrol or ga­so­line and elec­tric mo­tor. Many com­puter-con­trolled sys­tems are in place.

Hy­brid cars in­te­grate the power of con­ven­tional ga­so­line en­gine with that of the elec­tric mo­tor. The high-power bat­ter­ies pro­vide en­ergy to the mo­tor and the bat­tery gets charged dur­ing de­cel­er­a­tion of the car with the use of re­gen­er­a­tive brak­ing en­ergy. The en­gine also pro­vides as­sis­tance in recharg­ing which elim­i­nates the plug in need of the hy­brid which serves as one of the ma­jor ad­van­tages es­pe­cially for the In­dian mar­ket with mod­er­ate in­fras­truc­ture.

Hy­brid ve­hi­cles

The OEMs have started rolling out hy­brid ve­hi­cles. The Ashok Leyand ‘Hy­bus’ is In­dia’s first hy­brid bus as­sisted by ul­tra­ca­pac­i­tors in the pow­er­train which elim­i­nate the need for ex­ter­nal charg­ing equip­ment and in­fras­truc­ture.

Es­pe­cially de­signed for ur­ban trans­port with fre­quent stop-start cy­cles, a diesel genset charges the ‘Hy­bus’, while ul­tra­ca­pac­i­tors pro­vide the elec­tric mo­tor with the nec­es­sary power for move­ment. This en­vi­ron­ment-con­scious tech­nol­ogy is com­bined with in­ter­na­tional stan­dards of com­fort and con­ve­nience. The com­pany claims that 25% of sav­ings has been achieved on fuel con­sump­tion and sig­nif­i­cant re­duc­tion in emis­sions.

The se­ries hy­brid pow­er­train used in the HY­BUS is a com­bi­na­tion of a high-torque

Toy­ota Prius hy­brid en­gine

Ashok Ley­land Hy­bus gen­er­a­tor

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