Editor's note: This article has been changed to clarify that particulates are the emissions that can be reduced, and to remove reference to Delphi's Dynamic Skip Fire fuel-saving cylinder cut-off system.
TRAVERSE CITY, Mich. -- With automakers diverting product development funds from next-generation internal combustion engines, and spending it instead on electrified powertrains, the pressure is on suppliers to find low-cost ways to improve engine efficiency.
Mary Gustanski, Delphi Technologies' chief technology officer, told an audience Wednesday at the seminars that her company is simultaneously building a portfolio of electrified powertrain components and working to improve internal combustion engines.
Delphi has an innovation moving to production in a year that will improve fuel efficiency by raising the pressure of fuel as it is blasted into the engine's cylinders from 350 bar to 500 bar, or from around 5,000 pounds per square inch to more than 7,200 psi.
"We've designed the 500 bar system to be a drop-in system," Gustanski said. The new technology will replace a current-generation 350 bar system without requiring automakers to redesign the intake manifold, cylinder head or fuel pump drive system — design costs that usually add up to tens of millions of dollars. The 500 bar system can reduce particulate emissions by around 50 percent in some vehicles.
Delphi is also working on higher pressure fuel-injection components for diesel engines, Gustanski said, even though the market for passenger car diesels is rapidly shrinking. Commercial vehicles, such as semitrucks, would be among the first customers for Delphi's higher-pressure diesel fuel-injection components.