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Knowledge Gained from H2R Project to be used in Upcoming Production Cars
With its H2R Record Car, BMW has recently entered a new phase in the race to refine hydrogen-powered vehicles. Developed in just ten months, the H2R is an astounding success for BMW and its CleanEnergy program. It has already set nine world speed records, and spurred development at BMW of crucial components for its upcoming hydrogen-powered production vehicles. Although BMW had already created several different hydrogen-fueled motors, including those in its fleet of bi-fuel hydrogen and gasoline powered 7-Series sedans, the H2R concept has improved on the formula and pushed the boundaries of current technology even farther.  | | The H2R is an astounding success for BMW and its CleanEnergy program, having already set nine world speed records. (Photo: BMW of North America) |
BMWs starting point for the H2Rs powerplant was the 6.0-liter V12, fitted to the top-of-the-line 7-Series executive sedans. In order for the conventional gasoline-powered internal combustion engine (ICE) to accept hydrogen as a fuel source, the scientists and engineers at BMW had to revamp the majority of its components. The 6.0-liter V12, as seen in the 760Li, features direct fuel injection, a process  | | While based on the 6.0-liter V12 engine found in the 7-Series, the H2Rs powerplant is specially designed to use hydrogen fuel or gasoline. (Photo: BMW of North America) | by which a fine mist of gasoline is injected into the combustion chamber. Because hydrogen combustion characteristics are different than those of standard gasoline, an alternative system was called for. With the H2Rs bi-fuel motor, the injection system is integrated into the intake manifold, while special valves help to optimize power. BMW has also added an air-cooling process for each cylinder, to prevent the hydrogen-air mixture from pre-igniting in the motor.
Aside from these changes, most of the V12 remains intact. Trademark features,  | | The H2Rs engine generates an impressive 285 horsepower, which propels the record-setting vehicle to 60 mph in just under six seconds. (Photo: BMW of North America) | such as the Bi-Vanos variable valve timing system, as well as the advanced throttleless Valvetronic system, are still present, aiding the complex hydrogen combustion process and ensuring maximum motor efficiency. Unlike most hydrogen-fuelled prototypes created by rival manufacturers, the BMW H2R V12 runs equally well on gasoline or hydrogen. When operating on hydrogen fuel, the H2Rs engine generates an impressive 285 horsepower, which propels the record-setting vehicle to 60 mph in just under six seconds. Incredibly, it can also reach a world-record top speed, for a hydrogen-powered vehicle, of 188 mph.
Assisting the H-ICE V12 in its nine record run is a purpose-built chassis and a sleek, aerodynamically-honed  | | The H2R has been styled in the image of the popular Z4, but elongated and slimmed down. (Photo: BMW of North America) | body. The H2R has been styled in the image of the popular Z4, yet it has been elongated and slimmed down from the conventional two-seat roadster. Its instantly recognizable twin-kidney grille, contorted headlamps, flaming surfaces and defiant creases have all been integrated into the sleek and slippery carbon fiber shell. In addition to these modifications, BMW has incorporated a tapered, narrowing rear end and enclosed wheel wells to achieve superb speed and performance.
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