Abstract: A sensor cleaning device includes: a spray nozzle configured to spray washing water and air to a sensor; a first flow path having a venturi section that exerts a venturi effect in a midstream thereof and configured to guide air from an air supply source to the spray nozzle; a second flow path configured to provide fluid communication between a washing water supply source and the venturi section such that washing water is suctioned into the venturi section by the venturi effect and combines the washing water from the washing water supply source with a flow of air guided to the spray nozzle; a third flow path configured to communicate with the first flow path to bypass the venturi section; and a valve device configured to control a flow of fluid flowing along the first, second, and third flow paths to a blocking mode, a washing water supply mode, and an air supply mode.

Abstract: A battery is mounted in front of the vehicle along a longitudinal direction of the vehicle and mounted on the vehicle body, and the fuel tank is mounted in the vehicle body by disposing the fuel tank at the rear side in the longitudinal direction of the vehicle such that expansion of passenger compartment and vehicle body stability may be achieved.

Abstract: A battery is mounted in front of the vehicle along a longitudinal direction of the vehicle and mounted on the vehicle body, and the fuel tank is mounted in the vehicle body by disposing the fuel tank at the rear side in the longitudinal direction of the vehicle such that expansion of passenger compartment and vehicle body stability may be achieved.

Abstract: Disclosed is a urea injection device for a selective catalyst reduction device. The urea injection device for a selective catalyst reduction device serves to inject urea into a urea tank through a urea injection port and a urea injection line that connects the urea injection port and the urea tank. The urea injection device may include: i) a leveling pipe which is connected with the urea tank, ii) a separator which is installed to be connected with the leveling pipe, and connected to the urea injection port through a gas recirculation line, iii) a gas vent line which is connected with the separator, and iv) a check valve which is installed in the gas vent line.

Abstract: A urea solution pump unit includes: a urea solution tank having a mounting hole opened downward; a mounting flange mounted so as to close the mounting hole; a motor pump disposed in a horizontal direction on the mounting flange in the urea solution tank, and configured to suck a urea solution at one side using a pump, and discharge the urea solution to the other side through a space formed between a rotor and a stator of a motor; and a filter installed at an inlet side of the motor pump at an outside of the motor pump.

Abstract: A fuel filter for a diesel engine may include a head cover, a housing which is engaged to the head cover and accommodates a filter assembly, a body which passes through the head cover and is disposed at the center of the filter assembly, and a heater assembly which is disposed inside of the body, in which the housing is integrally engaged with an engine body, and the heater assembly selectively operates depending on a detection signal of a fuel temperature sensor provided at the engine body.

Abstract: Disclosed is a urea injection device for a selective catalyst reduction device. The urea injection device for a selective catalyst reduction device serves to inject urea into a urea tank through a urea injection port and a urea injection line that connects the urea injection port and the urea tank. The urea injection device may include: i) a leveling pipe which is connected with the urea tank, ii) a separator which is installed to be connected with the leveling pipe, and connected to the urea injection port through a gas recirculation line, iii) a gas vent line which is connected with the separator, and iv) a check valve which is installed in the gas vent line.

Abstract: A urea solution pump unit includes: a urea solution tank having a mounting hole opened downward; a mounting flange mounted so as to close the mounting hole; a motor pump disposed in a horizontal direction on the mounting flange in the urea solution tank, and configured to suck a urea solution at one side using a pump, and discharge the urea solution to the other side through a space formed between a rotor and a stator of a motor; and a filter installed at an inlet side of the motor pump at an outside of the motor pump.

Abstract: A canister for a vehicle is provided with charcoal therein so as to absorb evaporation gas evaporated at a fuel tank, supplies air by pressure difference formed due to engine purge, and thereby releases the absorbed evaporation gas so as to supply the evaporation gas to an engine and to be burned therein again.

Abstract: A fuel pump for LPG (liquefied petroleum gas), may include a main bracket that may be mounted at a fuel tank, an integrated bracket that an end thereof may be fixed to the main bracket, the other end thereof may be extended to an inner side of the fuel tank, and the whole of the bracket may be integrally formed, and a pump unit that may be fixed to the other end of the integrated bracket with a space therebetween so as to pump liquefied fuel to an engine.

Abstract: Provided is a method for controlling evaporation gas treating apparatus that can effectively prevent evaporation gases from leaking out of a vehicle with minimizing power consumption of a battery in the vehicle and improving efficiency of purging the evaporation gases, by selectively operating a heater for when a large amount of evaporation gases are contained in active carbon of a canister.

Abstract: A urea solution pump structure may include a housing portion connected to an external connector and covering an upper portion of the pump structure, a motor portion disposed at a lower portion of the housing portion and including a rotor and a stator, a case portion receiving the motor portion therein, and a pump portion disposed at a lower portion of the case portion and fluid-isolated from the motor portion, wherein the pump portion may be formed with an inlet and an outlet for a fluid, wherein a hollow cover may be provided at a lower portion of the case portion for separating the pump portion and the motor portion, and an oil seal unit may be mounted at a lower portion of the hollow cover for sealing a rotating shaft of the rotor which penetrates through the hollow cover.

Abstract: A urea solution heating device prevents freezing of a urea solution by using exhaust gas of an engine. More particularly, a urea solution heating device may use a pressure difference between an exhaust gas pipe and a muffler to bypass the exhaust gas to exchange heat between the exhaust gas and the urea solution. The urea solution heating device may include an exhaust gas pipe, a muffler, a first bypass pipe diverged from the exhaust gas pipe, a urea solution tank to which the bypassed exhaust gas is supplied, a second bypass pipe connected to the muffler, and a heat exchanger, wherein the exhaust gas sequentially flows through the first bypass line, the heat exchanger, and the second bypass line by a pressure difference between the exhaust gas pipe and the muffler. An urea solution heating method is also described.

Abstract: A pump unit for a urea-SCR system may use a fuel pump of a vehicle engine and may have a case portion surrounding a motor portion and a pump portion. The motor portion may include a barrier wall surrounding a rotator so as to separate the rotator from a stator of the motor portion, and the pump portion includes a shield in which a suction hole and a supply hole for fluid are formed and that is disposed between the pump portion and the motor portion so as to prevent fluid from leaking into the motor portion, so the motor is protected from the urea solution to prevent corrosion thereof, manufacturing cost is reduced, and noise caused by the vibration is reduced.

Abstract: A fuel supply system for a Gasoline Direct Injection (GDI) engine may include an Engine Control Unit (ECU) that sets a desired fuel pressure and controls a fuel pressure of a section from a low-pressure fuel pump to a high-pressure fuel pump in accordance with the desired fuel pressure, and a fuel pressure sensor that measures the fuel pressure of the section from the low-pressure fuel pump to the high-pressure fuel pump and supplies the measured fuel pressure to the ECU for feedback-controls of the low-pressure fuel pump. The fuel supply system may further include a fuel pump controller disposed between the ECU and the low-pressure fuel pump to control the low-pressure fuel pump. A control method of the fuel supply system may include detecting the number of revolution of the engine and the load, setting the desired fuel pressure, and feedback controlling the low-pressure pump.

Abstract: A fuel tank vaporization gas purge system may include a fuel tank with a vent valve and a roll over valve disposed for discharging a vaporization gas, a canister for absorbing/detaching a hydrocarbon in the vaporization gas, a vent line and a sub-vent lines connected to the canister to the vent valve and the roll over valve, a vapor control valve disposed in either the vent line or the sub-vent line, and an electronic control unit (ECU) electrically connected to said vapor control valve and selectively opening/closing said vapor control valve based on a type of said vapor control valve and operating conditions of a vehicle. The vapor control valve may be of an open valve type and closed by the ECU when an engine is in purging, or of a close valve type and opened by the ECU when an engine is turned off or during refueling.

Abstract: Provided is a method for controlling evaporation gas treating apparatus that can effectively prevent evaporation gases from leaking out of a vehicle with minimizing power consumption of a battery in the vehicle and improving efficiency of purging the evaporation gases, by selectively operating a heater for when a large amount of evaporation gases are contained in active carbon of a canister.

Abstract: A canister for a vehicle is provided with charcoal therein so as to absorb evaporation gas evaporated at a fuel tank, supplies air by pressure difference formed due to engine purge, and thereby releases the absorbed evaporation gas so as to supply the evaporation gas to an engine and to be burned therein again.

Abstract: A fuel pump for LPG (liquefied petroleum gas), may include a main bracket that may be mounted at a fuel tank, an integrated bracket that an end thereof may be fixed to the main bracket, the other end thereof may be extended to an inner side of the fuel tank, and the whole of the bracket may be integrally formed, and a pump unit that may be fixed to the other end of the integrated bracket with a space therebetween so as to pump liquefied fuel to an engine.