"With Displacement-on-Demand, the powertrain control module determines load conditions from vehicle sensors and driver commands. Under light load this sophisticated, 32-bit controller automatically closes both intake and exhaust valves on alternate cylinders of each cylinder bank (for example, numbers 1, 7, 4 and 6 cylinders). The valves are reopened the instant the control module determines that vehicle speed or load requires more power. The module also controls fuel injectors, electronic spark advance, and electronic throttle for transition between V-4 and V-8 operation so quickly that engine output increases immediately. The switchover is seamless and virtually imperceptible. The engine is started on eight cylinders."
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Today's Featured Article - An AC Model M Crawler - by Anthony West. Neil Atkins is a man in his late thirties, a mild and patient character who talks fondly of his farming heritage. He farms around a hundred and fifty acres of arable land, in a village called Southam, located just outside Leamington Spa in Warwickshire. The soil is a rich dark brown and is well looked after. unlike some areas in the midlands it is also fairly flat, broken only by hedgerows and the occasional valley and brook. A copse of wildbreaking silver birch and oak trees surround the top si
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