The new bonsai Toyota Hybrid Synergy Drive system for the Yaris
The 1.5-litre Atkinson cycle petrol engine weighs 16.5 kg less and is 10 per cent smaller than the 1.8-litre unit used in the Prius and Auris.
The new hybrid Yaris from Toyota will go on sale mid-2012
The littlest Toyota, the Yaris, is about to become hybridized too, and the engineering job to reduce the size of its Hybrid Synergy Drive system for the diminutive car is worth a look. 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 the Prius and Auris. Likewise, other major components such as the electric motor, power control unit and transaxle were also made lighter and smaller, but the power has remained robust at 99 bhp (74 kW) - most importantly, the hybrid Yaris will go on sale mid-year with very low fuel consumption, emissions, and ownership costs.
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