Mildura Weekly : Friday December 6 Vol 8 No 6
Mildura Weekly – 06/12/13 63 www.milduraphonebook.com.au By BARRY PARK in TOKYO MAZDA is predicting its future engine technology will deliver up to 30 per cent in fuel savings – even before factoring in weight-gain savings from its SkyActiv program. The Japanese car-maker has hinted at future engine technology that will result in it developing a high- compression petrol engine that will act like a diesel powertrain at low revs, and a conventional spark-ignition petrol powerplant higher in the rev range. The target for the car-maker is a staggeringly high 18:1 compression ratio that will force the engine into a state known as homogenous charge compression ignition (HCCI), where the compression alone is sufficient for the petrol to self-combust without the need for a spark plug. That compares with current compression ratios of about 10:1 in most vehicles, although motorcycles are generally up around 12:1. Speaking in Tokyo at an Australia- first preview of a Mazda2 electric vehicle featuring a rotary-powered, petrol-fuelled range extender, Mazda general manager of product strategy, Hidetoshi Kudo, said the next generation of HCCI-enabled engines to roll out the technology was only a few years away. “We’d like to introduce that strategy at an appropriate time,” Mr Kudo said. “For the SkyActiv-G or -D (petrol and diesel engines) in 2006 we began engineering and in 2011 we began mass production. “So in about five years we were able to mass-produce those technologies after studying the engineering. “It (engineering engines) is difficult, so maybe you can imagine the sort of timing you could expect. “It’s not a commitment; it’s the image you can get for the timing.” One of the keys of the next generation of SkyActiv engines is that the diesel- like performance will expand the engine’s low fuel-use characteristics over a wider rev range, doing away with the need for expensive turbochargers to help reduce emissions. More importantly, though, the car- maker could stick with a traditional six-speed gearbox when other brands needed to develop more expensive – and complicated – gearboxes with up to 10 ratios, Mr Kudo said. Ichiro Hirose, the vice-president of Mazda’s European research and development unit, said the car-maker would build its new SkyActiv technology, including a high-compression head, on top of its existing 2.0 -litre four-cylinder petrol engine. “The basic concept is carried over as that technology story is on top like a building block strategy,” Mr Hirose said. “The current consideration for (SkyActiv) generation 2 is something around 16:1 to 18:1 (compression ratio) that we are aiming for.” The figure of about 18:1 was “an appropriate limit”, he said. Mr Hirose said reducing engine performance losses using special low-friction cylinder coatings would contribute towards further fuel use improvements for generation three of SkyActiv. © GoAutoMedia 2013 FUTURE MODELS Mazda’s future engine direction One of the keys of the next generation of SkyActiv engines is that the diesel-like performance will expand the engine’s low fuel-use characteristics over a wider rev range, doing away with the need for expensive turbochargers to help reduce emissions. With greatness comes great expectations. Introducing the newest Ultimate Driving Machine that is driven by great expectations, the all new BMW X5. From great to greater to greatness, the third generation BMW X5 Sports Activity Vehicle will exceed your expectations. Expect an even more exhilarating on-road experience with intense power and performance at every turn. Expect the perfect harmony of luxury, comfort and safety. Expect everything the Ultimate Driving Machine should be. Contact Mildura BMW to arrange a test-drive today. DRIVEN BY GREAT EXPECTATIONS AT MILDURA BMW. INTRODUCING THE ALL NEW BMW X5. Mildura BMW Sales Finance Service Parts Mildura BMW Cnr Seventh St & Etiwanda Ave, Mildura. (03) 5021 2999. www.mildurabmw.com.au LMCT 10074 Overseas model shown.
Friday November 29 2013 Vol 8 No 5
Friday December 13 Vol 8 No 7