Patent application number | Description | Published |
20130259733 | SINTERED ALLOY FOR VALVE SEAT AND MANUFACTURING METHOD OF EXHAUST VALVE SEAT USING THE SAME - A sintered alloy for a valve seat may be manufactured using a method including: mixing MnS with an alloy powder for a valve seat including C at 0.8-1.2 wt %, Ni at 2.0-4.5 wt %, Cr at 3.0-5.0 wt %, Mo at 16.0-20.0 wt %, Co at 9.0-13.0 wt %, V at 0.05-0.15 wt %, S at 0.2-0.8 wt %, Fe, and additional inevitable impurities; making a first shape by forming the mixed materials; pre-sintering the first formed shape; making a secondary shape by re-pressing the first pre-sintered shape; main-sintering the secondary shape; and tempering the main-sintered secondary shape. | 10-03-2013 |
20130263799 | GLOW PLUG AND ELECTRIC THERMOSTAT WITH THE SAME - A glow plug may include: i) a hollow plug housing that is mounted on a plug mount in an insulation status; ii) a center shaft that is fixed to one end of the plug housing in an insulation status and receives power from the outside; iii) a heating unit that is connected to the center shaft and the other end of the plug housing, and generates heat using a potential difference; and iv) a connecting unit that insulates the plug mount and the center shaft, is coupled to the plug mount, and electrically connects with center shaft with the plug housing. | 10-10-2013 |
20130263800 | ELECTRONIC THERMOSTAT - An electronic thermostat apparatus for controlling a temperature of a coolant of an engine in a vehicle may include a housing connected to a plurality of flow paths through which the coolant of the engine flows, a wax case installed inside the housing and provided with a wax accommodation space therein, a glow plug heater inserted in a wax filled inside the wax accommodation space and configured to generate heat by receiving an external power, a driving body engaged to the wax case and moving according to deformation of the wax by the heat of the glow plug heater, a main valve engaged to the driving body and configured to open/close a radiator-side flow path by a movement of the driving body, and an elastic member elastically biasing the main valve to the radiator-side flow path. | 10-10-2013 |
20130263801 | THERMOSTAT - A thermostat apparatus may include a valve body including a first valve formed to open or close a first passage thereon, and a second valve integrally connected to the first valve and opening or closing a second passage, an elastic member that elastically biases the valve body toward the first passage such that the first valve closes the first passage and the second valve opens the second passage, and a drive member that selectively pushes the valve body toward the second passage such that the first valve opens the first passage and the second valve closes the second passage. | 10-10-2013 |
20130263802 | ENGINE COOLING SYSTEM, ELECTRONIC THERMOSTAT CONTROL SYSTEM AND CONTROL METHOD FOR THE SAME - An electronic thermostat control system may include a control duty determination portion outputting PWM duty signal for controlling the coolant temperature according to a coolant temperature, a rising rate of the coolant temperature, an engine speed, a load and a vehicle speed, a driving portion applying a time condition to the PWM duty signal output by the control duty determination portion for controlling outputting interval, and a fault diagnosis portion diagnosing operations of the electronic thermostat by analyzing the signals output by the driving portion and changes of the coolant temperature. | 10-10-2013 |
20140027522 | Thermostat Structure - A thermostat structure may include a valve configured to open or close a flow path through which a coolant flows, and a spring configured to elastically bias the valve to control a flow rate of the coolant flowing to an engine by automatically opening or closing the valve according to a change in a temperature of the coolant, wherein an upper portion of the spring may be coupled to a valve guide configured to support the valve, and may be formed in a shape of a semi-beehive having a uniform radius at a portion coupled to the valve guide and having an increasing radius as being closer to the lower portion thereof. | 01-30-2014 |
20140041603 | Thermostat Having Elastic Member - A thermostat apparatus may include a thermostat case formed of a first passage and a second passage, a valve body disposed in the thermostat case, wherein a first valve may be formed at one end side thereof to open or close the first passage, a retainer, one end portion of which may be mounted on the other end side of the valve body, wherein a second valve may be formed at the other end portion of the retainer to open or close the second passage, an elastic member that elastically biases the retainer in a direction to make the first valve close the first passage and make the second valve open the second passage, and a drive portion that may be configured to push the retainer in a direction that according to temperature, the first valve opens the first passage and the second valve closes the second passage. | 02-13-2014 |
20140097258 | Thermostat - A thermostat apparatus may include a thermostat case where a first passage may be formed, a first valve that may be disposed in the thermostat case to open or close the first passage, wherein a mounting protrusion may be formed along an inner circumference of the first valve, a drive portion that may be disposed to penetrate the first valve and moves the first valve depending on temperature to open or close the first passage, and a rubber cap that a first side interior circumference thereof contacts an exterior circumference of the mounting protrusion of the first valve and a second side interior circumference thereof slidably contacts an exterior circumference of the drive portion. | 04-10-2014 |
20140097259 | THERMOSTAT - A thermostat apparatus may include a valve body including a first valve, a second valve, wherein the first valve may be integrally connected with the second valve , and a drive portion the drive portion includes a wax case that wax may be charged therein, a piston guide connected to a front end portion of the wax case, a piston that may be slidably inserted into the piston guide and movable in accordance with expansion or contraction of the wax, a semi-fluid that may be charged between the wax and the piston, and a rubber layer that may be formed on an upper end portion surface of the piston to seal a space the piston and an interior circumference of the piston guide. | 04-10-2014 |
20140103124 | CONTROL SYSTEM OF ELECTRICAL THERMOSTAT AND THE SYSTEM THEREOF - A control method of an electrical thermostat that includes an operating heater heating wax so as to operate an operating valve that may be disposed to close a coolant passage according to an exemplary embodiment of may include detecting a coolant temperature of coolant circulating a coolant passage, determining whether the coolant temperature may be included in a predetermined heating temperature range, performing a coolant heating mode by supplying a predetermined level of power to the operating heater for a predetermined time, if the coolant temperature may be within the heating temperature range, and stopping the coolant heating mode in a condition that the operating valve may be closed. | 04-17-2014 |
20140103126 | THERMOSTAT THAT THE REACTIVITY THEREOF IS IMPROVED - A thermostat having improved reactivity may include a thermostat case having side connected to first and second passages, and a third passage formed between the first and second passages in a side direction, a valve body where first and second valves are formed to open/close the first and second passages, and a mounting space is formed in the valve body, an elastic member elastically pushing the valve body in a direction of the first valve such that the first valve closes the first passage, and a drive portion moving the valve body in response to contraction or expansion of a wax disposed in the mounting space. A flowing turn wall may be formed to correspond to the third passage such that a liquid flowing in through the second passage moves in a direction opposite to the third passage. | 04-17-2014 |
20140182522 | ENGINE HAVING THERMOSTAT AND SYSTEM THEREOF - An engine system may include a thermostat casing connected to a first, second, third, and fourth flow channels, a valve guide in which a main valve that opens and closes the first flow channel is formed at one side, a closing valve that opens and closes the second flow channel is formed at the other side, and a bypass valve is formed adjacent to the closing valve, an elastic member that elastically supports the valve guide to enable the main valve to block the first flow channel and the closing valve to block the second flow channel, a driver that moves the valve guide so that the main valve opens the first flow channel and the closing valve opens the second flow channel according to a temperature of a coolant, and a control unit that controls the temperature and a flow of the coolant by controlling the driver. | 07-03-2014 |
20140345547 | COOLING SYSTEM OF ENGINE - A cooling system of an engine may include an engine that has a cylinder block where a cylinder is formed therein and a cylinder head that covers the cylinder block, a radiator that is disposed outside the engine, a first thermostat that is disposed on a coolant line connecting the engine with the radiator in such a way that the coolant passes the radiator or does not pass the radiator, and a second thermostat that is configured to make the coolant selectively pass the coolant line that is formed in the cylinder block. | 11-27-2014 |