Other engine makers are quietly doing their revolution, tuning
up new architectures.
In the piston engine field, variable compression ratio is plebiscited.
The improvments of electronic regulation in "real time" provide variable
geometry driving. All those applications below are attractive concerning massic
power and consumption.
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SAAB SVC engine
Supercharged engine, with variable compression ratio, obtained by rocking
cylinders head on the crankshaft casing.
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MAYFLOWER-E3 engine
Engine with both variable compression ratio and cubic capacity. The
special crank-rod system is compound with a sliding rod, which pivot
moves on two axis. The piston kinematic is modified.
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Turbocharged poly-fuel engines, with variable compression ratio. The
principle is based on cylinders twinning of two classical engines. The
chambers communicate two by two. The dephasing of the synchronized crankshafts
induces the compression ratio variation.
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Concerning rotative engines, changes are more difficult because
of their deepness.
WANKEL engine, also called "rotary engine", has equipped
commercial cars. The
QUASI-TURBINE engine is a recent hybrid between piston engine,
Wankel and turbine.
The list is not exhaustive but represent the will and the growing necessity
to build engines which are economical, clean and compact to preserve urbanism,
environment and quality of life.
To discover more about automotive technologies, AUTO-INNOVATIONS
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