In order to achieve a good pick-up and smooth acceleration performance, a Mikuni-made Butterfly valve of Skinner union (BS) type carburettor equipped with Yamaha Throttle Position Sensor (YTPS) has been adopted in engine. The BS carburettor on the engine employs a piston valve that operates on the vacuum pressure developed by the running engine to supplement the adjustments of the intake passage area with the opening and closing of the throttle valve to regulate the amount of air and fuel mixture supplied to engine. The addition of this piston valve function ensures smoother running even when sharp opening or closing of the throttle occurs. Also, in order to ensure excellent fuel economy, this carburettor is equipped with the first YTPS eve on a model. With the existing model, it was only possible to adjust the ignition timing in accordance with the engine RPM as it varied from the low to high RPM ranges. Regardless of the throttle position the timing would always be the same for a given engine RPM. Whereas in the high RPM range it is sufficient to have roughly the same ignition advance regardless of throttle position in the low to middle rpm range the timing needs vary greatly depending on the throttle position, and it in turn has an effect on fuel economy and pick-up. The BS carburettor utilises information from the throttle position sensor to provide highly precise adjustment of the ignition advance based on the degree of throttle opening at any given time by means of a three dimensional digital mapping. This optimises the functioning of the BS carburettor while also ensuring outstanding combustion efficiency and, thus, maximised fuel economy and good pick up.
Digital Twin Spark – ignition (DTS-i) engine incorporates digital twin spark ignition, digital CDI and Third generation throttle responsive ignition system (TRICS-III) for digitally enhanced mileage, digitally enhanced power and eco-friendly performance. Combined action of these technologies breakthroughs under the control of an advanced microprocessor — a revolution in technology. DTS-i has two spark plugs and generates spark at either end of the engine’s combustion chamber resulting in faster and more efficient combustion and increasing the efficiency of engine and decreasing the wastage of expensive fuel. DTS-i makes combustion so efficient that the technology has proved to be one of the most eco-friendly riding machines. The DTS-i engine meets the proposed emission norms of 2005 and also optimist in meeting the 2010 emission norms as well.
Ford Shelby GR-1 concept car
Ford is taking the occasion of the Pebble Beach Concours d’Elegance to unveil the Ford Shelby GR-1 concept, calling the new sports car a salute to ‘performance art’. The GR-1 is a uniquely emotional American sports car design that makes a bold statement about Ford’s performance future. “The Ford Shelby Cobra concept was a small step in our plans for the Ford GT supercar architecture and our relationship with Carroll Shelby,” says J Mays, Ford Motor Company group vice-president of Global Design, “And the Ford Shelby GR-1 is a giant leap toward the future.” Based on the architecture of the Ford GT, the Ford Shelby GR-1 is a front-engined, two-seat, fastback supercar.