Patent application number | Description | Published |
20090145383 | VARIABLE VALVE SYSTEM - A variable valve system includes a camshaft in which a first lobe having a first height and a second lobe having a second height that is higher than the first height from a rotational center axis of the camshaft are formed; a first tappet that corresponds to the first lobe and that has a depression negatively formed in one side thereof; a second tappet corresponding to the second lobe and that is inserted into the depression; at least a pin positioned at the first tappet and fixing a position of the second tappet; and a hydraulic pressure control portion that transfers hydraulic pressure into the depression so as to move the second tappet upwards or downwards and to the pin so as to engage or disengage the first tappet with the second tappet. | 06-11-2009 |
20120122620 | CHAIN GUIDE OF AUTOMOTIVE ENGINE - A chain guide that contacts a chain connecting a cam sprocket and a crank sprocket, and has a contact portion contacting the back of the chain in a length direction of the chain and a convex curved line in a cross-section of the contact portion. | 05-17-2012 |
20120129636 | FRICTION REDUCING DEVICE OF TIMING CHAIN FOR VEHICLE - Friction reducing units are integrally configured in a tensioner arm and a chain guide that are disposed at both sides of a timing chain to make contact with the timing chain, respectively to increase the thickness of the oil film, such that it is possible to improve durability of an entire timing chain system while preventing noise from being generated by reducing a friction loss generated on each of contact surfaces of the tensioner arm and the chain guide and prevent fuel efficiency of the vehicle from being deteriorated. | 05-24-2012 |
20130298855 | SYSTEM FOR DETECTING MALFUNCTION OF VARIABLE VALVE LIFT APPARATUS AND METHOD FOR THE SAME - A system for detecting malfunction of a variable valve lift apparatus may include an engine provided with the variable valve lift apparatus controlling lift of a valve, a vibration sensor which detects vibrations generated in closing of the valve and outputs corresponding vibration signals, and a control portion which receives the vibration signals and determines the malfunction of the variable valve lift apparatus according to the vibration signals to be detected within a predetermined crank angle. | 11-14-2013 |
20150128888 | CONTINUOUSLY VARIABLE VALVE TIMING DEVICE - A continuously variable valve timing device is provided and includes a cam sprocket connected with a camshaft having a plurality of cams to rotate the camshaft and an electric variable valve timing mechanism connected with the cam sprocket, and driven by an electric motor. A chain cover protects the cam sprocket and a chain system from foreign substances and an electric variable valve timing mechanism cover protects the electric variable valve timing mechanism from foreign substances. A seal ring partitions an internal space between the electric variable valve timing mechanism and the electric variable valve timing mechanism cover. In addition, a pressure maintaining device is mounted within the electric variable valve timing mechanism cover to maintain pressure formed within the internal space of the electric variable valve timing mechanism cover at about atmospheric pressure. | 05-14-2015 |
20150184588 | THERMAL INSULATION COATING COMPOSITION AND THERMAL INSULATION COATING LAYER - Disclosed is a thermal insulation coating composition including: a polymer resin; an aerogel; and an amphiphilic compound including specific functional groups and having a weight average molecular weight of about 200 to about 5000. A thermal insulation coating layer obtained from the thermal insulation coating composition is also provided. | 07-02-2015 |
20150308303 | INTAKE VALVE FOR ENGINE - An intake valve for an engine supplies an intake gas to a combustion chamber of the engine, and an adiabatic coating layer including a polyamideimide resin and an aerogel dispersed in the polyamideimide resin and having thermal conductivity of 0.60 W/m or less may be formed on a surface portion that comes into contact with a flame during operation of the engine. | 10-29-2015 |
20160133818 | THERMOELECTRIC GENERATION STRUCTURE FOR VEHICLE - A thermoelectric generation structure for a vehicle is provided. The structure includes an exhaust manifold into which exhaust gas is introduced and a cover that is disposed within the exhaust manifold and provided with a cooling water microchannel to perform cooling. A magnetic thermoelectric material is mounted between the cover and the exhaust manifold to generate electricity. Additionally, the magnetic thermoelectric material having an adjustable size and shape is used in the thermoelectric generation device by being mounted in the exhaust manifold of the vehicle to minimize the weight and volume to improve the marketability. The electricity is generated by the magnetic thermoelectric material using the spin seebeck phenomenon to improve the fuel efficiency. | 05-12-2016 |
20160138515 | CYLINDER HEAD FOR ENGINE - Disclosed is a cylinder head for an engine. The cylinder head for an engine includes an insulation coating layer formed on a surface of an intake port surface. The insulation coating layer comprises a polyamideimide resin and an aerogel in the polyamideimide resin, for example, as being dispersed, and the insulation coating layer has a thermal conductivity of 0.60 W/m or less. | 05-19-2016 |