Mazda has announced three new technology developments nearing completion in Japan.

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Its new Smart Idle Stop System (SISS) delivers up to a 9% improvement in fuel consumption, stopping the engine then automatically restaring using direct-injection helped by a starter motor action.


To achieve this, both the compression-stroke and expansion-stroke pistons are stopped at exactly the correct position to ensure the right balance of air volume in each cylinder.


The automaker claimed its system is unique, and a global first, as it begins indexing the pistons before the engine starts up again, unlike standard systems that do this after an electric motor starts turning over the engine.


The system consequently starts about twice as fast as competitor systems, and is said to deliver a smoother restart and fuel savings. It will be introduced in the EU in the first half of next year.


Also due in Europe early next year is a new-generation 2.2-litre common-rail turbo diesel developing 185PS of power and 400Nm of torque.


To enhance overall fuel efficiency, the engine employs new ultra high pressure fuel injectors and a lower compression ratio plus a diesel particulate with catalyst activation mechanism that removes particulate matter from the exhaust gases more efficiently.


The ceramic base material in the unique catalyst is a claimed world first with a molecular structure that increases the rate of particulate matter combustion and enhances DPF regeneration speed.


A new plastic moulding technology reduces consumption of plastic resins by 20 to 30% and also vehicle plastics weight. The new technology potentially can be applied to nearly all plastic parts used in vehicles.

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