Variable compression ratio engine
OwnerSoon Gil Janginventor
Life of this patent
Estimating the term…
Abstract
In a variable compression ratio engine according to the present invention, an eccentric sleeve is installed on a crankpin, and an effective length of a connecting rod is changed by adjusting a posture of an eccentric sleeve relative to the connecting rod, or an effective length of a crank arm is changed by adjusting a posture of an eccentric sleeve relative to the crank arm. An eccentric sleeve control shaft installed on a main journal or one shaft of a planetary gear system is connected to an eccentric sleeve by means of an eccentric sleeve auxiliary shaft. Automatic adjustment of the compression ratio based on crankshaft rotation speed may be achieved using a rotor, a stator, or a rack.
Claims18
A variable compression ratio engine comprising:
- a crankshaft having an eccentric sleeve auxiliary shaft support bracket installed on a crank arm;
- an eccentric sleeve control gear connected to an eccentric sleeve control shaft installed on a main journal of the crankshaft;
- an eccentric sleeve gear connected to an eccentric sleeve installed on a crankpin of the crankshaft;
- and
- an eccentric sleeve auxiliary shaft having one end at which an eccentric sleeve control auxiliary gear is installed, and the other end at which an eccentric sleeve auxiliary gear is installed,
- wherein the eccentric sleeve auxiliary shaft is installed on the eccentric sleeve auxiliary shaft support bracket, and
- wherein the eccentric sleeve control gear engages with the eccentric sleeve control auxiliary gear, and the eccentric sleeve gear engages with the eccentric sleeve auxiliary gear.
A variable compression ratio engine comprising:
- a crankshaft having an eccentric sleeve auxiliary shaft support bracket installed on a crank arm;
- a planetary gear system comprising a sun gear, a planetary gear shaft, a planetary gear, and a ring gear installed on a main journal of the crankshaft;
- an eccentric sleeve gear connected to an eccentric sleeve installed on a crankpin of the crankshaft;
- and
- an eccentric sleeve auxiliary shaft having one end at which an eccentric sleeve control auxiliary gear is installed, and the other end at which an eccentric sleeve auxiliary gear is installed,
- wherein the eccentric sleeve auxiliary shaft is installed on the eccentric sleeve auxiliary shaft support bracket, and
- wherein any one of the sun gear, the ring gear, an external ring gear provided outside the ring gear, and a carrier gear connected to the planetary gear shaft engages with the eccentric sleeve control auxiliary gear, and the eccentric sleeve gear and the eccentric sleeve auxiliary gear engage with each other.
Dependencies are inferred from the claim text.