Inside a modern supermini every inch of
space counts. That’s why Toyota had to be sure that in creating its new
Yaris Hybrid, fitting a hybrid powertrain was not at the cost of room in
the cabin, or in the boot.
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The result is a clever, compact
version of Toyota’s Hybrid Synergy Drive system that is used in larger
models, such as Prius and Auris Hybrid. Extensive R&D work has produced
an efficient, full hybrid system for Yaris using a petrol engine and
electric motor, that gives a total power output of 99bhp (74kW). |
The system uses a new 1.5-litre
Atkinson cycle petrol engine that weighs 16.5kg less and is 10 per cent
more compact than the 1.8-litre unit used in Prius and Auris. Likewise,
other major components such as the electric motor, power control unit
and transaxle were also made lighter and smaller: the size of the motor
has been reduced by 20 per cent and thePCU12 per cent, compared to those
in Auris Hybrid; and the transaxle has shed 11kg and is six per cent
shorter.
The packaging challenge also demanded
careful thought about the size and location of the nickel-metal hydride
battery pack and the fuel tank, in order to minimise the impact on cabin
space for rear seat passengers and the size of the boot. Both are
positioned under the rear bench seat, which means the car’s loadspace
capacity, and rear passenger space is unaffected.
With the benefit of full hybrid
technology, Yaris hybrid is set to deliver class-leading CO2,
NOx and particulates emissions, together with excellent fuel consumption
and low total ownerships costs. The new model will go on sale in the UK
in June. |
