Hyundai Motor Company, Kefico Corporation and Kia Motors | Date: 2012-05-14
A chamber structure for a vehicle may include a housing, a chamber formed inside the housing and into which a blow-by gas flows, and a cooling water path which may be formed inside the housing around the chamber and through which a preheated cooling water passes.
Kefico Corporation | Date: 2013-04-10
The present invention relates to a hydraulic solenoid valve for an automatic transmission of a vehicle, which moves an armature and a spool upward or downward by means of magnetic force so as to open/shut an inlet and an outlet, characterized in that an air gap is formed between a circumferential surface of the armature and a circumferential inner surface of the movable guide body, thereby reducing mechanical processing error or assembly error, and enhancing hydraulic performance and gear shifting performance.
Kefico Corporation | Date: 2012-08-29
A fuel injector fixing structure of a fuel rail of a vehicle includes a main pipe having two ends connected to a plug and an end cap; a plurality of injector holders fixed onto an outer surface of the main pipe at predetermined intervals; a mounting lug disposed adjacent to the injector holder; a fuel injector detachably fixed into the injector holder; a damping member detachably attached to the fuel injector and elastically supporting the fuel injector with respect to the injector holder; and a fixing member for detachably fixing the fuel injector on to the injector holder. Accordingly, since a fuel injector is elastically supported by a damping member and is fixed by an additional fixing member, a high pressure applied to the fuel injector when the fuel injector injects fuel may be absorbed and departure of the fuel injector when a fuel rail is transferred, assembled, removed, or replaced may be prevented while the role and function of the damping member is maintained.
Kefico Corporation | Date: 2013-05-01
The disclosure relates to a fuel injection valve. The fuel injection valve for an internal combustion engine includes a needle which moves within a valve housing; a valve seat formed therein with an opening and closing hole which is opened and closed by the needle; an orifice plate which is attached to a lower portion of the valve seat and from which a fuel is injected through an injection hole; a fuel tube being a path through which the fuel injected from the orifice plate is supplied to the internal combustion engine; and a tube adaptor which is installed between the orifice plate and the fuel tube in order to prevent a leakage of the fuel supplied from the orifice plate to the fuel tube.
Kefico Corporation | Date: 2014-10-15
Provided is a direct spray fuel injector including a bundle of opening/closing valves, wherein the bundle of opening/closing valves includes: a valve needle that is disposed within a valve housing that constitutes an exterior of the direct spray fuel injector in a lengthwise direction and that opens and closes a spray hole opened to one side of the valve housing; an electromagnetic coil that is installed at a side opposite to the spray hole of the valve needle and causes a spray hole opening/closing operation of the valve needle to be performed; an armature that is coaxially mounted on an outer circumferential surface of the valve needle to be slidable in an axial direction so as to be positioned between the valve needle and the electromagnetic coil; and a pressurizing spring that is installed to pressurize the valve needle toward the spray hole and causes the valve needle to close the spray hole in normal times, and the bundle of opening/closing valves is configured to pressurize the valve needle by the armature so that bounce generated when the valve needle in an open state approaches the spray hole so as to close the spray hole is able to be attenuated. The structure of a buffer spring that suppresses bounce generated in the valve needle when a valve is closed is simplified so that the number of components of the bundle of opening/closing valves and the number of assembling processes of the direct spray fuel injector can be reduced and manufacturing efficiency and economic feasibility of the direct spray fuel injector can be improved.
Kefico Corporation | Date: 2013-04-25
A solenoid valve with the magnet filter includes a flange having a guide hollow part formed therein, in which at least one port that communicates with the guide hollow part is formed on an outer circumferential surface of the flange to be spaced apart from each other by a predetermined distance in a lengthwise direction; a spool that is slidably installed in the guide hollow part; and a driving unit that is installed at a lower end of the spool and allows the spool to slide along the guide hollow part by a supply of current, wherein a bypass flow passage is formed in the driving unit so that bypass of oil or air is performed, and a magnet filter is installed at one side of the bypass flow passage so as to prevent introduction of metallic foreign substances.
Kefico Corporation | Date: 2012-06-20
The present invention relates to a mounting structure for a direct injection fuel rail. Specifically, a mounting structure 120 for a direct injection fuel rail comprises a mount unit 124 and an injector cup 122 combined with a main pipe 110, wherein the injector cup 122 and the mount unit 124 are connected to and integrated with each other via a bridge 126, wherein the injector cup 122 is bonded to the main pipe 110, and wherein the mount unit 124 is separated from the main pipe 110. As such, concentration of stress due to displacement may be prevented, resistance against fatigue fracture may be increased, thermal deformation and additional concentration of stress may be prevented, manufacturability may be improved, and precise assembling positions may be easily ensured.
Kefico Corporation | Date: 2014-08-27
Disclosed herein is a method for controlling gear shifting of an automatic transmission from an N gear stage to an N gear stage. The gear shifting is embodied by means of engaging and releasing friction elements. The method includes selecting at least two among an rpm of a turbine, an rpm of a first motor generator (MG1), an rpm of a second motor generator (MG2) and an rpm of a planetary gear set as control factors, and controlling engagement and release of the friction elements using the control factors.
Kefico Corporation | Date: 2014-12-31
An apparatus and method for supplying fuels of a bi-fuel engine, whereby a supply pressure of a liquid fuel is increased by using a high pressure of a supplied liquefied gas fuel so that the liquid fuel can be smoothly supplied to the bi-fuel engine, the apparatus including: a liquefied gas fuel supply flow passage connected to a fuel supply flow passage; a liquid fuel supply flow passage connected to the fuel supply flow passage; a fuel selection valve that allows the liquefied gas fuel supply flow passage or the liquid fuel supply flow passage to be selectively open; a first chamber in which the liquid fuel supplied to the liquid fuel supply flow passage is stored; and a pressurizing unit that operates so that a volume of an internal space of the first chamber can be reduced and that pressurizes the liquid fuel.
Kefico Corporation | Date: 2013-12-18
The present invention relates to a structure and method for coating a nozzle for a fuel injection valve. The structure for coating a nozzle for a fuel injection valve, said coating reducing the frictional resistance of a nozzle needle contacting a sheet part of a nozzle body having an injection hole, includes: a Cr coating layer deposited on the outer surface of the nozzle needle of the fuel injection valve; a CrN coating layer deposited on the outer surface of the Cr coating layer; and a WCC coating layer deposited on the outer surface of the CrN coating layer. Here, the hardness of the CrN coating layer is relatively greater than that of the WCC coating layer. According to the present invention, wear resistance and impact resistance may be improved by means of the coating layer being formed on the outer surface of the nozzle needle so as to prevent impacts, resulting from collisions between a front end of the nozzle needle and a sheet part, from being transferred to the nozzle needle. Also, the hardness of the CrN coating layer is greater than that of the WCC coating layer so as to further improve wear resistance and impact resistance. Thus, changes in the fuel injection properties of the fuel injection valve over time may be reduced so as to improve the fuel injection valve.