Read more about Ford Has a New Direct Water Injection System Coming at AutoGuide.comFord’s German division has filed a patent for a new water injection system that could bring exponential improvements in efficiencies and high horsepower gains.
Truthfully, water injection isn’t a new technology, World War II fighter planes used vaporized water to improve low-speed thrust during take off, plus, an extra spurt of speed during dogfights. Post-war, both Saab and Oldsmobile offered vehicles with factory installed water injection systems before the technology enjoyed a renaissance in high-performance Group B rally cars during the ’80s.
Traditionally, water injection has been used as a short cut to high performance, where a 50/50 water-alcohol mix is injected into the intake manifold where it’s used to lower combustion temperatures and cool the pistons and cylinder walls. This, in turn, reduces the likelihood of detonation and allows for higher compression ratios, which can manifest as either higher performance metrics or a more efficient engine.
But where Ford’s design differs is its focus on injecting water directly into the combustion chamber instead of its traditional upstream location in the intake tract. To do this Ford is proposing a new type of injector which is fed by high-pressure fuel and water lines and is capable of injecting both fluids in order to control pre-detonation as the ECU uses a medley of valve control systems to optimize compression ratios on the fly.