Abstract: The present disclosure relates to a 2-cycle engine with a valve system that generates power during every one crankshaft rotation. The 2-cycle engine of the present disclosure includes the valve system opening and closing an air intake valve and an exhaust valve and includes a turbocharger. In the turbocharger, the air intake valve and the exhaust valve are respectively opened and closed once during one crankshaft rotation, and the valve system is configured to control the turbocharger using difference between an air intake pressure and an exhaust pressure. Accordingly, a current air intake reaches a target air intake.

Abstract: The present disclosure relates to a 2-cycle engine with a valve system that generates power during every one crankshaft rotation. The 2-cycle engine of the present disclosure includes the valve system opening and closing an air intake valve and an exhaust valve and includes a turbocharger. In the turbocharger, the air intake valve and the exhaust valve are respectively opened and closed once during one crankshaft rotation, and the valve system is configured to control the turbocharger using difference between an air intake pressure and an exhaust pressure. Accordingly, a current air intake reaches a target air intake.

Abstract: A variable charge motion system may include a sliding plate positioned internal to a pipeline of an intake port connected to a combustion chamber, and slide and moved to induce a tumble flow with respect to an intake flow of the air which flows the pipeline and enters into the combustion chamber, wherein the sliding plate is positioned along a guide wall formed in the pipeline.

Abstract: A variable charge motion system may include a sliding plate positioned internal to a pipeline of an intake port connected to a combustion chamber, and slide and moved to induce a tumble flow with respect to an intake flow of the air which flows the pipeline and enters into the combustion chamber, wherein the sliding plate is positioned along a guide wall formed in the pipeline.

Abstract: A gasoline direct injection engine is provided in which fuel is directly injected by an injector disposed at a side of an exhaust port. The gasoline direct injection engine includes an injector that directly injects fuel into a combustion chamber, a spark plug, an intake port, an exhaust port, and a piston head The intake port and the exhaust port are disposed to face each other based on an installation location of the spark plug, and the injector is disposed at a side of the exhaust port.

Abstract: Output performance of the engine may be maximized by a configuration in which air is supplied so as to maximize volumetric efficiency of the respective cylinders in a multi-cylinder engine including a plurality of cylinders.

Abstract: A method for controlling an EGR system includes determining whether diagnosis conditions for an EGR cooler are satisfied while the EGR system operates. The EGR system is turned off when the diagnosis conditions for the EGR cooler are satisfied and a retard amount of ignition timing is larger than a first reference value. The EGR cooler is diagnosed base on a comparison result of the retard amount of the ignition timing and a second reference value while the EGR system is off.

Abstract: A catalyst can of exhaust gas can include a catalyst embedded substantially in the center of an inner space of the catalyst can, and an inflow space and a discharge space partitioned in an upper part and a lower part of the catalyst can, respectively. The catalyst can also includes an inflow-side partition vertically cutting and dividing the inflow space into a plurality of partial inflow spaces, and an inlet formed for each partial inflow space.

Abstract: Output performance of the engine may be maximized by a configuration in which air is supplied so as to maximize volumetric efficiency of the respective cylinders in a multi-cylinder engine including a plurality of cylinders.

Abstract: An engine includes two injectors that inject fuel in an intake port connected with one combustion chamber and allows overcoming the technical limits of the related art and achieving more appropriate fuel injection in accordance with the operation sections of an engine, thereby improving fuel efficiency and output of the engine with more efficient operation.

Abstract: A catalyst can of exhaust gas can include a catalyst embedded substantially in the center of an inner space of the catalyst can, and an inflow space and a discharge space partitioned in an upper part and a lower part of the catalyst can, respectively. The catalyst can also includes an inflow-side partition vertically cutting and dividing the inflow space into a plurality of partial inflow spaces, and an inlet formed for each partial inflow space.

Abstract: A cylinder deactivation system for a vehicle and a variable valve lift system is fabricated with an end pivot structure that can control two valves at the same time. The structure ensures reliability since a latching pin does not receive a shear force and provides an excellent assemblage and a cost reduction by minimizing the number of parts Such a cylinder deactivation system may include a rocker shaft having an oil supply hole, a rocker arm, a middle arm, and a latching portion separating the rocker arm from the middle arm when an oil pressure operates through the oil supply hole.

Abstract: A cylinder deactivation system for a vehicle and a variable valve lift system is fabricated with an end pivot structure that can control two valves at the same time. The structure ensures reliability since a latching pin does not receive a shear force and provides an excellent assemblage and a cost reduction by minimizing the number of parts Such a cylinder deactivation system may include a rocker shaft having an oil supply hole, a rocker arm, a middle arm, and a latching portion separating the rocker arm from the middle arm when an oil pressure operates through the oil supply hole.

Abstract: A continuous variable valve lift (CVVL) apparatus adjusting a valve lift, duration of valve opening and closing, and a valve timing includes a cam rotating by a cam shaft, a first shaft having a first radius, a second shaft having a second radius smaller than the first radius and coupled in the first shaft such that the first and second shafts are non-concentric, a roller moving upward and downward by a rotation of the cam and connected to the first shaft to be moved on the basis of a position of the first shaft, a first arm rotatably connected to the second shaft to be moved by the roller, and a second arm rotatably secured to a third shaft to open and close the valve by an operation of the first arm.

Abstract: Disclosed herein is a continuously variable valve lift system for an engine which is able to variably adjust valve lift and opening duration of intake and exhaust valves operated by the rotation of a cam shaft. The continuously variable valve lift system of the present invention has a compact structure, so that space required for the system in a cylinder head is reduced. Furthermore, the continuously variable valve lift system is provided at a position level with or below a position at which the cam shaft is installed, thus reducing the overall height of the cylinder head, thereby reducing the volume of the engine.

Abstract: Disclosed herein is a continuously variable valve lift system for an engine which is able to variably adjust valve lift and opening duration of intake and exhaust valves operated by the rotation of a cam shaft. The continuously variable valve lift system of the present invention has a compact structure, so that space required for the system in a cylinder head is reduced. Furthermore, the continuously variable valve lift system is provided at a position level with or below a position at which the cam shaft is installed, thus reducing the overall height of the cylinder head, thereby reducing the volume of the engine.