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BorgWarner suggests Valve-Event Modulated Boost system can offer 6-17% fuel economy benefit over already downsized and turbocharged engines

Green Car Congress

MAY 9, 2012

The VEMB system uses a concentric camshaft, blow-down manifold and scavenge manifold to separate the exhaust event into two phases: high-energy blow-down to the turbo without pumping losses, and high-hydrocarbon scavenge to the EGR system. Source: Borgwarner. Click to enlarge. —Christopher Thomas. Virtual Cylinder Deactivation (VCD).

Fuel Economy

Fuel Economy Downsizing Economy Engine

Achates Power building 2.7L opposed-piston light-duty engine; exceeding CAFE 2025, Tier 3 targets at lower cost

Green Car Congress

JANUARY 13, 2017

Achates has demonstrated the ability to achieve exceptionally high exhaust gas temperatures at idle—much beyond what can be done with equivalent 4-stroke engines. The intake ports at one end of the cylinder and exhaust ports at the other are opened by the piston motion and enable efficient uniflow air scavenging. Earlier post.).

Light

Light Engine Power Powered

EV Driven

BorgWarner suggests Valve-Event Modulated Boost system can offer 6-17% fuel economy benefit over already downsized and turbocharged engines

Achates Power building 2.7L opposed-piston light-duty engine; exceeding CAFE 2025, Tier 3 targets at lower cost

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