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Grip : GRIP October 2011
NEW PRODUCT GRIP auto start stoP for subaru SUBARU is introducing Auto Start Stop technology in every new generation Impreza and XV – the first time a mainstream Australian small car range and Compact Sports Utility Vehicle (SUV) range have featured the fuel-saving technology. Every Symmetrical All- Wheel Drive Impreza and XV variant will debut next year with Auto Star t Stop, which also helps to reduce emissions. It is one of several factors contributing to the outstanding fuel efficiency of both new models – Impreza emissions are improved by up to 24 per cent in the combined cycle, while fuel efficiency is improved by up to 22 per cent in the combined cycle. “All-Wheel Drive equals both safety and efficiency in our new generation Subarus,” Subaru Australia Managing Director, Nick Senior, said. “We were the first mainstream brand with five- star safety across the range and now we’re the first with ultra-efficient Start Stop Technology across entire mainstream small car and compact SUV ranges. “Subaru is able to achieve such outstanding fuel AUTO Start Stop stops the engine when the vehicle is temporarily stationary, such as at traffic lights, reducing fuel consumption. In Linear tronicTM CVT- equipped vehicles the engine stops 0.5 seconds after the car halts. When the brake is released, the engine starts after 0.35 seconds. In six-speed manual Impreza and XV, the engine also stops 0.5 seconds after the car halts, when the car is in neutral, or the clutch released. It restarts 0.35 seconds after the clutch is pressed. FHI studies indicate cars may be stopped up to 30 per cent of travel time, particularly in peak hour. An “off” button enables the feature to be turned off - the default is “on”. A special starter and Inrush Current Reduction (ICR) relay, are among the components supporting Auto Star t Stop. The ICR relay stabilises power supply during idle reduction, so instruments and displays do not flicker. The starter in LineatronicTM CVT Impreza and XV features tandem solenoids. Independent solenoids control the motor and the pinion gear connecting engine and motor rotation, ensuring rapid engine restart in as little as 0.2 seconds. An electric pump supplies oil to the forward clutch’s hydraulic circuit while the engine is stopped. This minimises delay between engine restart and vehicle motion, producing smoother driving. During Auto Start Stop operation, the air conditioner, navigation and audio systems are all fed by the auxiliary power supply. The vehicles are fitted with a long-life battery. On XV manual variants, Hill Start Assist ensures Auto Start Stop operates safely on hills. To avoid wasting electrical energy, the car’s electric power steering is turned off whenever the engine is automatically stopped. How it works MODEL YEAR 2012 IMPREZA AND XV OFFICIAL FUEL CONSUMPTION Engine Combined (l/10 0km)/CO2 Urban Extra urban XV 2.0i six-speed manual 7.3/168 9.2/212 6.2/143 XV 2.0i Lineartronic CVT 7.0/162 8.9/205 5.9/137 Impreza 2.0i six-speed manual 7.1/164 (MY11*:8.9/210) 9.2/213 5.9/137 Impreza 2.0i Linear tronic CVT 6.8/157 (*MY11:8 .8/208) 8.9/205 5.6/130 (* MY11 Impreza available with five-speed manual and four-speed auto only) (Vehicles tested in accordance with ADR 81/02.) consumption because the Boxer engine and symmetrical drivetrain are easily compatible with lightweight All-Wheel Drive.” Senior said Subaru’s renewed focus on fuel efficiency was also highlighted in a recent Liberty 2.5i economy run from the Melbourne Cricket Ground to the Sydney Cricket Ground. (See separate story.) “The fuel efficiency of new Impreza and XV, plus the results achieved by Dean and Bob in current Liberty, debunk the myth that AWD cars are less efficient,” Senior added. “Not only are they highly competitive, they have the added safety benefit of AWD, for great handling, grip and fun.” INSIDE GRIP HOME PAGE AFTERSALES MARKETING ECONOMY RUN PARTS & ACCESSORIES FINANCE AMBASSADOR NEW PRODUCT BRAND COMPARISON DEALER RANKINGS SPORT
GRIP September 2011