Abstract: A method of controlling an engine stop position in a hybrid electric vehicle having a motor capable of controlling engine speed is provided. The method includes: a) reducing the engine speed according to an first engine speed reduction rate using the motor in a state where fuel supplied to the engine is cut off; b) after the engine speed is reduced to first reference speed, adjusting an actual engine speed reduction rate according to second engine speed reduction rate using the motor, and monitoring a current crank position to count the number of times when the current crank position coincides with a given target engine stop position; and c) if the number of times is more than a predetermined number and if the actual engine speed is equal to or below second reference speed, stopping the engine using the motor when the current crank position coincides with the target engine stop position.

Abstract: The present invention provides a method for controlling an electric oil pump for an HEV having an automatic transmission and capable of operating in an electric vehicle (EV) mode by a clutch between an engine and a drive motor, which can provide an efficient power control of the system and satisfy system requirements such as a rapid response with the operation of an external oil pump during initial start-up and during running of the vehicle.

Abstract: A system and method for measuring tip velocity of sprayed fuel in an engine includes a light source, a lens, a Charge-Coupled Device (CCD) camera, and a control unit. The lens allows light, which is emitted from the light source, to enter into a combustion chamber. The CCD camera photographs the shapes of the dispersion of the sprayed fuel. The control unit causes the light source to emit light two times by controlling the light source, acquiring a single frame image of the shapes of the dispersion of the sprayed fuel by controlling the CCD camera, and calculates the tip velocity of the sprayed fuel by processing the acquired image.

Abstract: A method of controlling an engine stop position in a hybrid electric vehicle having a motor capable of controlling engine speed is provided. The method includes: a) reducing the engine speed according to an first engine speed reduction rate using the motor in a state where fuel supplied to the engine is cut off; b) after the engine speed is reduced to first reference speed, adjusting an actual engine speed reduction rate according to second engine speed reduction rate using the motor, and monitoring a current crank position to count the number of times when the current crank position coincides with a given target engine stop position; and c) if the number of times is more than a predetermined number and if the actual engine speed is equal to or below second reference speed, stopping the engine using the motor when the current crank position coincides with the target engine stop position.

Abstract: A system and method for measuring tip velocity of sprayed fuel in an engine includes a light source, a lens, a Charge-Coupled Device (CCD) camera, and a control unit. The lens allows light, which is emitted from the light source, to enter into a combustion chamber. The CCD camera photographs the shapes of the dispersion of the sprayed fuel. The control unit causes the light source to emit light two times by controlling the light source, acquiring a single frame image of the shapes of the dispersion of the sprayed fuel by controlling the CCD camera, and calculates the tip velocity of the sprayed fuel by processing the acquired image.