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2-step Variable Valve Actuation: System Optimization and Integration on an SI Engine
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From Delphi
2-step variable valve actuation using early-intake valve closing is a strategy for high fuel economy on sparkignited gasoline engines. Products & Services
Product and component testing services is the evaluation of a finished product or component through performance in electrical, life, environmental exposure, dynamic, ergonomic or other specialized tests. Also testing to standards such as UL 489, CE or MIL-STD 810.
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Topics of Interest
2-Step variable-valve lift and timing is a high-value technology for the further development of automotive internal combustion engines. 2-Step valve train systems provide improved engine efficiency,...
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Modern engines are becoming highly complex, with several strongly interactive subsystems - - variable cam phasers on both intake and exhaust, along with various kinds of variable valve lift...
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Chapter 1
1.
The term TDC refers to
the engine exhaust system
rolling resistance of tires
crankshaft position corresponding to a piston at the top of its stroke...
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An accelerated fuel injector deposit formation test was developed to understand fuel deposit formation on fuel injectors for Gasoline Direct injection engines. As part of the test development, both a...
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1.10 Variable
Valve timing
Valve timing is normally a compromise in design that aims to achieve good performance across the operating speed range of the engine. Inlet valves open a few degrees...
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