Innovative Solution for the Valve Lifts Variation of Combustion Engines 2012-36-0199
The constant search for more efficient combustion engines with
lower levels of CO₂ emissions has contributed to the development of
new technologies that could reach severe global environment
targets. Most of the new technologies are related to the lift and
timing variation of the opening and closing of the intake valves,
through variable camshafts. The controlled lift and timing
variation allows the air-fuel mixture to be optimized for specific
working conditions of the engine without the driver's
This paper presents a new design and a new operation concept for
the lift variation of the intake valve. The technical and
economical feasibility analysis of this new design is done through
virtual studies and prototypes in the Alpha phase of the project.
The valve lift control optimizes the fuel consumption, and
consequently, it reduces the levels of CO₂ emissions.