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Study finds engines emit exhaust nanoparticles even when not fueled during engine braking

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Exhaust particle size distributions measured by ELPI (color map) and particle concentration measured by CPC (white line) during individual engine braking conditions (speed change from 32 km/h to 0 km/h). The starting point of engine braking is marked by a vertical green line, and the end point is marked by a vertical red line.

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Achates near-zero heavy-duty opposed-piston diesel enters fleet service; compliant with 2027 NOx levels

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liter, heavy-duty opposed-piston, three-cylinder diesel engine it developed in a project funded by the California Air Resources Board (CARB) and several partners ( earlier post ) has entered fleet service with WALMART Corporation in a Peterbilt 579 tractor. liter engine. Achates Power announced that the 10.6-liter,

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ORNL-led team developing breakthrough high-temperature, high-strength Al alloy for advanced light-duty engines

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A team led by researchers from Oak Ridge National Laboratory (ORNL) is developing a lower-cost cast aluminum (Al) alloy capable of at least a 50 ˚C temperature increase over the current cylinder head alloys 319 and 356 for use in light duty engines. Materials for exhaust and energy recovery. Earlier post.).

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BMW to begin testing BMW M Hybrid V8 with P66/3 engine

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The BMW M Hybrid V8 is powered by the P66/3 eight-cylinder turbo engine with supplementary electric drive. The combustion engine is based on the DTM unit used in the BMW M4 DTM in 2017 and 2018. BMW M Hybrid V8 engine. That saved us time and a lot of money and was therefore efficient and sustainable.

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Volkswagen 2.0 TDI diesel for Euro 6d; SCR twin-dosing

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Volkswagen continues to refine its most important diesel engine, the 2.0-liter With SCR twin dosing technology in the exhaust gas system, the diesel unit now undercuts the Euro 6d emission standard limits while also running quietly and smoothly, according to the company. TDI took a step forward and was therefore given the suffix “evo”.

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IAV develops new close-coupled diesel exhaust gas aftertreatment system for improved emissions reduction

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IAV has developed a particularly closed-coupled diesel exhaust gas aftertreatment (EAT) system. Under the EU6 standard, diesel engines are still allowed to emit up to 80 mg NO x /km milligrams of nitrogen oxides per kilometer—not only under the legal framework in the cycle but also in respect of increasingly tighter RDE requirements.

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Achates Power developing light-duty two-stroke opposed-piston diesel engine: the OP4

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The OP4 light-duty opposed-piston diesel. Achates Power, which is developing a family of two-stroke, compression-ignition (CI) opposed-piston (OP) engines, has designed and is developing a light-duty diesel concept engine, the OP4. Achates started with a 1.06L/cylinder engine configuration, then moved up to a 1.6L/cylinder

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