In the News

The Science of Combustion

Date: 08/01/2013

Company: Achates Power

Source: Desktop Engineering

Achates Power uses CFD Simulation and optimization to find the best opposed-piston engine design

By Kenneth Wong

Fabien Redon, VP of technology development at Achates Power (pronounced A-kay-tees), is currently prevented from revealing the recognizable commercial vehicle makers working with his company by confidentiality agreements. But if I want to get a sense of the energy and efficiency of his company’s flagship products, opposed-piston engines (OPE), Redon suggests that all I have to do is observe the stream of delivery trucks pulling in and out of large grocery chains.

Dubbed “An Engine That Uses One-Third Less Fuel” in MIT Technology Review (Jan. 14, 2013,, Achates’ engine bypasses the need for cylinder heads, “which are a major contributor to heat losses in conventional engines,” according to the company. The OPE contains two pistons per cylinder, working in opposite reciprocating action. In a paper authored by Achates’ staff, the company states that its opposed-piston, two-stroke diesel engine design “provides a step-function improvement in brake thermal efficiency compared to conventional engines while meeting the most stringent, mandated emissions requirements.”

Read full story at Desktop Engineering

Media Contact

For all media inquiries please contact us at 617-912-1420.