Engine with variable compression ratio

Details Engine with variable compression ratio Engine with variable compression ratio

F - Mech Eng,Light,Heat,Weapons

02

B

F02B 75/04 (2006.01) F02B 63/02 (2006.01) F02B 75/16 (2006.01) F02B 75/02 (2006.01)

Patent

CA 2422659

An engine with a variable compression ratio includes a connecting rod connected to a piston, a first arm turnably connected to the connecting rod and to a crankshaft through a crankpin, a second arm integrally connected to the first arm, a control rod turnably connected to the second arm, and a displaceable support shaft for supporting the other end of the control rod for turning movement. In the engine, a displacement Vhpiv0 and a compression ratio .epsilon.piv0 at the time when the support shaft is in any first position and a displacement Vhpiv1 and a compression ratio .epsilon.piv1 at the time when the support shaft is in a second position displaced from the first position are determined, and a relation, Vhpiv1 > Vhpiv0 is satisfied when .epsilon.piv1 < spiv0, and a relation, Vhpiv1 < Vhpiv0 is satisfied when .epsilon.piv1 > spiv0.

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