Abstract: A variable valve apparatus may include a crank position sensor sensing a position of a crank shaft, a plurality of valves selectively opening or closing a combustion chamber in a cylinder, a hydraulic pump supplying a hydraulic pressure or a hydraulic flow, servo valves controlling the hydraulic pressure or hydraulic flow supplied from the hydraulic pump according to the position of the crank position, sensed by the crank position sensor, actuators operating the valves by the hydraulic pressure or hydraulic flow supplied from the servo valves, and a controlling outputting a control signal that controls an open amount and open time of the servo valves according to a position of the crank shaft.

Abstract: A dosing module for an exhaust gas post treatment system of a vehicle, which may be used to inject a reducing agent along a flow direction of exhaust gas at a front side of a selective catalyst reduction (SCR) unit, may include a dosing main body having a connection portion that may be connected to the SCR unit and an inflow portion into which the exhaust gas flows, an injector that may be disposed at a boss portion that may be mounted on the dosing main body to inject the reducing agent into the dosing main body, and a guide member that may be disposed inside the dosing main body to guide the exhaust gas flowing into the dosing main body along a predetermined route.

Abstract: A system for controlling variable valve includes a crank angle sensor detecting an angle of a crankshaft, an engine control unit (ECU) (ECU) outputting a control signal to the intake and exhaust valves by receiving a sensing signal from the crank angle sensor, a control portion transmitting the signal input from the engine control unit (ECU), a first valve comprising a first actuator controlling the intake valve and a second valve comprising a second actuator controlling the exhaust valve wherein each actuator receives the signal from the control portion, a pressure supply unit supplying pressure to the first and second valves, and first and second sensors detecting positions of the actuators, wherein the control portion compensates the operation error of actuators by receiving the feedback signal from the first and second sensors. By controlling variable valve, the intake and exhaust valves may be precisely controlled and fuel consumption can be improved.