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
Turbo boost can be controlled by changing the timing of the exhaust valves—no waste gate is required. SUV/Minivan) compared to about 5% with conventional cylinder deactivations, and about 7.2% Although this reduces the window of operation and fuel economy benefit to 2-4%, it also eliminates vehicle adaptation cost.
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