Abstract: The present invention relates to a compressor and, more specifically, to an air compressor for a vehicle, which can support a rotor disk and form a cooling flow channel by a first cover and a second cover, and thus can improve cooling efficiency while increasing manufacturability.

Abstract: The present invention relates to an air foil journal bearing in which air is introduced between a foil and a rotor rotating at high speed and generates pressure to support a radial load of the rotor and allow the rotor to rotate smoothly, and more particularly, to a housing fixing structure of an air foil journal bearing that improves durability against external impact or vibration by restricting an axial movement of a bump by means of two opposite ends of the bump and a top foil fixing portion.

Abstract: An air compressor according to an aspect of the present invention comprises: a housing; a rotating shaft which is disposed in the housing; a compression unit which is connected to the rotating shaft to compress and discharge inlet air; a motor unit which drives the rotating shaft; a control board which controls the motor unit; and a filter unit which filters out noise from external power and supplies the external power to the control board, wherein the housing includes a first cooling flow channel for cooling the motor unit and a second cooling flow channel for cooling the filter unit, and the first cooling flow channel communicates with the second cooling flow channel.

Abstract: A system for diagnosing a misfire of an engine includes a sensing unit including at least one sensor for detecting at least one detection value associated with an operation of the engine, and an electronic control unit configured to determine whether a misfire of the engine due to exhaust valve leakage has occurred based on the detection values from the sensing unit, and perform an operation corresponding to the misfire due to exhaust valve leakage when the misfire due to exhaust valve leakage has occurred, wherein the electronic control unit a misfire code for exhaust valve leakage in a memory when the misfire due to exhaust valve leakage has occurred.

Abstract: The method for calculating the fuel injection amount of a fuel vapor dual purge system may include the steps of calculating, by a controller, volumetric efficiency of a combustion chamber, determining, by the controller, a fuel vapor detection delay time at which the fuel vapor is detected in a surge tank according to the calculated volumetric efficiency of a combustion chamber, calculating, by the controller, a time at which the fuel vapor is injected into the combustion chamber based on the determined fuel vapor detection delay time, and calculating, by the controller, a fuel vapor total injection amount at the time at which the fuel vapor is injected into the combustion chamber. The method may be performed in a turbocharger operation section.

Abstract: The present disclosure relates to a dual purge system for a vehicle, which varies a purging amount depending on a pressure condition of an intake manifold surge tank to realize desired purging efficiency suitable for a vehicle driving range. In the dual purge system, by desorbing fuel evaporation gas from all canisters in a state of engine negative pressure, a purging amount increases thereby improving fuel efficiency, and by desorbing the fuel evaporation gas from some canisters in a state of engine positive pressure, flow resistance of the gas is reduced in comparison with previous flow resistance thereby increasing desorption efficiency.

Abstract: The present disclosure relates to a dual purge system for a vehicle, which varies a purging amount depending on a pressure condition of an intake manifold surge tank to realize desired purging efficiency suitable for a vehicle driving range. In the dual purge system, by desorbing fuel evaporation gas from all canisters in a state of engine negative pressure, a purging amount increases thereby improving fuel efficiency, and by desorbing the fuel evaporation gas from some canisters in a state of engine positive pressure, flow resistance of the gas is reduced in comparison with previous flow resistance thereby increasing desorption efficiency.

Abstract: The method for calculating the fuel injection amount of a fuel vapor dual purge system may include the steps of calculating, by a controller, volumetric efficiency of a combustion chamber, determining, by the controller, a fuel vapor detection delay time at which the fuel vapor is detected in a surge tank according to the calculated volumetric efficiency of a combustion chamber, calculating, by the controller, a time at which the fuel vapor is injected into the combustion chamber based on the determined fuel vapor detection delay time, and calculating, by the controller, a fuel vapor total injection amount at the time at which the fuel vapor is injected into the combustion chamber. The method may be performed in a turbocharger operation section.

Abstract: An apparatus and a method for controlling an ignition timing of an engine may include a storage storing a map table in which correction torques are recorded; a receiver receiving first atmospheric information corresponding to a current position of a vehicle; a detector configured for measuring second atmospheric information corresponding to the current position of the vehicle; and a controller configured for detecting a corresponding correction torque from the map table on the basis of the first atmospheric information and the second atmospheric information, correcting a required torque using the detected correction torque, and controlling an ignition timing of an engine on the basis of the corrected required torque.

Abstract: An apparatus and a method for controlling an ignition timing of an engine may include a storage storing a map table in which correction torques are recorded; a receiver receiving first atmospheric information corresponding to a current position of a vehicle; a detector configured for measuring second atmospheric information corresponding to the current position of the vehicle; and a controller configured for detecting a corresponding correction torque from the map table on the basis of the first atmospheric information and the second atmospheric information, correcting a required torque using the detected correction torque, and controlling an ignition timing of an engine on the basis of the corrected required torque.

Abstract: An oil filter system for a vehicle may provided at a cylinder block of an engine for collecting engine oil from a blow-by gas generated in a crank case. The oil filter system may include a blow-by path to recirculate the blow-by gas so that the blow-by gas generated in the crank case is combusted together with a fuel-air mixture, a filter case that is a space formed between the crank case and the blow-by path, a filter partition disposed to divide the filter case into two spaces, and configured to collect the engine oil contained in the blow-by gas, and an oil pan mounted in the cylinder block for collecting the engine oil that have been collected by the filter partition. The filter partition may collect the engine oil in a forward direction flow and a reverse direction flow of the blow-by gas.

Abstract: An oil filter system for a vehicle may provided at a cylinder block of an engine for collecting engine oil from a blow-by gas generated in a crank case. The oil filter system may include a blow-by path to recirculate the blow-by gas so that the blow-by gas generated in the crank case is combusted together with a fuel-air mixture, a filter case that is a space formed between the crank case and the blow-by path, a filter partition disposed to divide the filter case into two spaces, and configured to collect the engine oil contained in the blow-by gas, and an oil pan mounted in the cylinder block for collecting the engine oil that have been collected by the filter partition. The filter partition may collect the engine oil in a forward direction flow and a reverse direction flow of the blow-by gas.