Photo: Efficient exotic: Transonic Combustion put its new fuel-injection technology into this sports car, which weighs about as much as a Toyota Prius hybrid and has similar aerodynamics. It’s not a hybrid, but it gets better gas mileage than a Prius. Credit: Transonic CombustionFrom Technology Review:
A novel fuel-injection system achieves 64 miles per gallon.
Transonic Combustion, a startup based in Camarillo, CA, has developed a fuel-injection system it says can improve the efficiency of gasoline engines by more than 50 percent. A test vehicle equipped with the technology gets 64 miles per gallon in highway driving, which is far better than more costly gas-electric hybrids, such as the Prius, which gets 48 miles per gallon on the highway.
The key is heating and pressurizing gasoline before injecting it into the combustion chamber, says Mike Rocke, Transonic's vice president of business development. This puts it into a supercritical state that allows for very fast and clean combustion, which in turn decreases the amount of fuel needed to propel a vehicle. The company also treats the gasoline with a catalyst that "activates" it, partially oxidizing it to enhance combustion.
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