Apr 9, 2021 · Here’s how an opposed-piston engine works: Two pistons share a common cylinder, each with its own crankshaft and con rod. The pistons move toward one another and (almost) meet at top dead center.

An opposed-piston engine is a piston engine in which each cylinder has a piston at both ends, and no cylinder head. Petrol and diesel opposed-piston engines have been used mostly in large-scale applications such as ships, military tanks, and factories.

Mar 24, 2023 · When the pistons reach their respective bottoms, fresh air flows in from ports at the bottom, while exhaust is rejected through ports at the top.

Nov 19, 2018 · Opposed pistons share a combustion chamber in this venerable engine design, and Achates's refined version claims fuel-economy improvements.

Aug 14, 2023 · In an opposed-piston engine, two pistons are placed at opposite ends of the cylinder, and the fuel is combusted in the space between them. The design requires no cylinder head or valve system,...

Mar 20, 2020 · The Commer TS3 engine is a unique powerplant that uses a Roots-style supercharger for scavenging as opposed to as a power adder. It's three-cylinder, six-piston configuration displaces 200 cubic inches, and it's unique sound …

Opposed piston engines are being developed as a tool to reduce CO2 and NOx emissions from heavy-duty trucks. Here's a deeper look into this technology and recent test results.

Sep 13, 2023 · Opposed piston engines use a flipped-around configuration with two pistons facing each other, eliminating the need for a header. While mostly used for large-scale applications, opposed piston engines offer better fuel economy and power density, but have maintenance and packaging challenges.

Dec 21, 2011 · Unlike traditional four-stroke engines, OPEs combine two pistons per cylinder, working in opposite, reciprocating motion. This eliminates the cylinder head and valvetrain—considered among the most complex and costly components in conventional engines and the primary contributors to heat and friction losses.

Opposed-piston engines operate with a set of pistons in each cylinder, with the absence of typical cylinder heads. Achates Power has been a key driver in the development of the opposed-piston engine (Redon et al., 2014; Regner et al., 2011, 2013).