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EPA Approves 8.8L LNG Engine For Highway

WOOD DALE, IL—Power Solutions International has announced that the Environmental Protection Agency (EPA) has approved the company’s new 8.8-liter natural gas engine for highway uses.

The alternative fuel motor will be offered on a range of medium-duty commercial trucks and buses, suiting vocational trucks, garbage trucks, RVs, delivery fleets, school and transit buses and tow and utility trucks.

PSI’s CEO and chairman Gary Winemaster said that the engine is a response to customer demand for power solutions that address emissions regulations.

“Our alternative-fuel engines are a cleaner and considerably less expensive solution when compared to diesel,” Winemaster said. “With this engine, we offer on-highway OEMs a quality alternative that meets their performance, compliance and economic demands, while providing the flexibility to choose the best fueling strategy today and in the future.”

Winemaster also said that the new 8.8-liter solves two big problems in the current alternative fuel market: the limited range of available platforms, and the quality and performance shortcomings of current products. Diesel industry manufacturers have explored alternatives, but have not yet found a solution to meet size and power requirements.

With emissions regulations tightening and diesel fuel not expected to drop in price anytime soon, PSI believes there is demand for alternative fuel. The company thinks the newly certified motor will help open up the alternative fuel market.

The liquid-injected propane engine is designed to mimic diesel behavior, with its peak output of 270hp coming at 2600 rpm and all 565 lb-ft of torque available at just 1500 rpm.

The engine is compatible with SAE 2 and 3 transmission interfaces, which opens up many drivetrain possibilities for manufacturers. In addition to the transmission versatility, all PSI 8.8-liters come standard with an electronically-controlled viscous fan clutch, integrated 320-amp alternator, pad-mounted air conditioning compressor, and eight-groove belts.

PSI partnered with Delphi to handle the advanced controls and Ricardo to test, validate and certify the powerplant. 

 
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