Abstract: A hybrid vehicle includes an engine with cylinders generating driving power and a turbocharger having a turbine in an exhaust line, and a compressor which rotates with the turbine and compresses intake gas. An electric supercharger is disposed in the intake line upstream from the compressor, a catalytic converter is disposed in the exhaust line downstream from the turbine. A post processing bypass line connects the exhaust line at a downstream portion of the catalytic converter and the intake line at a downstream portion of the electric supercharger. A low pressure EGR device includes a low pressure EGR line branching off from the exhaust line and merging into the intake line and a low pressure EGR cooler disposed therein. A high pressure EGR device includes a high pressure EGR line branching off from an exhaust system and merging into an intake system, and a high pressure EGR cooler disposed therein.

Abstract: A hybrid vehicle may include an engine; a turbocharger including a turbine disposed in an exhaust line and a compressor; an electric supercharger disposed in the intake line at an upstream portion of the compressor; an exhaust gas post processing apparatus; a low pressure EGR device which includes a low pressure EGR line, a low pressure EGR cooler and a low pressure EGR valve; an intake bypass line which connects the intake line at a downstream portion of the electric supercharger and the intake line at an upstream portion of the electric supercharger; an intake bypass valve disposed in the intake bypass line; a post processing bypass line which connects the intake line between the electric supercharger and the compressor and the exhaust line between the turbine and the exhaust gas post processing apparatus; and a post processing bypass valve disposed in the post processing bypass line.

Abstract: A hybrid vehicle includes an engine with cylinders generating driving power and a turbocharger having a turbine in an exhaust line, and a compressor which rotates with the turbine and compresses intake gas. An electric supercharger is disposed in the intake line upstream from the compressor, a catalytic converter is disposed in the exhaust line downstream from the turbine. A post processing bypass line connects the exhaust line at a downstream portion of the catalytic converter and the intake line at a downstream portion of the electric supercharger. A low pressure EGR device includes a low pressure EGR line branching off from the exhaust line and merging into the intake line and a low pressure EGR cooler disposed therein. A high pressure EGR device includes a high pressure EGR line branching off from an exhaust system and merging into an intake system, and a high pressure EGR cooler disposed therein.

Abstract: A method of predicting and controlling NOx generation amount is provided. The method includes calculating a difference between an actual and a reference NOx exhaust amount and analyzing influence of the in-cylinder pressure at a combustion start time, an oxygen amount in EGR gas, and a fuel injection timing. A NOx rate of change is calculated based on change in the in-cylinder pressure at the combustion start time, the oxygen amount in the EGR gas, and the fuel injection timing. A variation width and a NOx value are calculated at the combustion start time, the oxygen amount in the EGR gas, and the fuel injection timing. The NOx value is adjusted based on the NOx value adjustment amount and a NOx final value is determined. A target boost pressure, a target oxygen amount, and a target fuel injection timing are determined to provide a final command signal.

Abstract: A hybrid vehicle may include an engine; a turbocharger including a turbine disposed in an exhaust line and a compressor; an electric supercharger disposed in the intake line at an upstream portion of the compressor; an exhaust gas post processing apparatus; a low pressure EGR device which includes a low pressure EGR line, a low pressure EGR cooler and a low pressure EGR valve; an intake bypass line which connects the intake line at a downstream portion of the electric supercharger and the intake line at an upstream portion of the electric supercharger; an intake bypass valve disposed in the intake bypass line; a post processing bypass line which connects the intake line between the electric supercharger and the compressor and the exhaust line between the turbine and the exhaust gas post processing apparatus; and a post processing bypass valve disposed in the post processing bypass line.

Abstract: A cylinder deactivation (CDA) system and a control method for the same and the CDA system may include a plurality of cylinder; a cylinder deactivation (CDA) apparatus selectively are configured to de-activate an operation of an exhaust valve of the partial cylinder among the plurality of cylinders; a connection pipe connecting the de-activated cylinder to the normally operated cylinder among the plurality of cylinders; an auxiliary valve apparatus configured for opening or closing the connection pipe to supply a compressed air of the de-activated cylinder among the plurality of cylinders to the normally operated cylinder; a vehicle operation state measuring device configured for measuring a vehicle operation state to output a corresponding signal; and a controller configured for controlling operations of the CDA apparatus and the auxiliary valve apparatus depending on the corresponding signal of the vehicle operation state measuring device.

Abstract: A glow plug of a vehicle preventing an interference with an injected fuel includes a preheating rod having one end protruding to the combustion chamber to selectively preheat the combustion chamber; a bellows pipe enclosing the preheating rod to maintain an air-tightness of an area where the preheating rod is inserted to the combustion chamber; a piezo element selectively pulling or pushing another end of the preheating rod; and a controller controlling a deformation of the piezo element and the preheating of the combustion chamber through the preheating rod.

Abstract: A method of predicting NOx generation amount of a compression ignition engine is provided. The method includes predicting a composition ratio of a gas in a mixture and a flame temperature using driving variables of an engine and calculating a nitrogen oxide generation rate using the composition ratio of the gas in the mixture and the flame temperature. Additionally, a nitrogen oxide generation concentration around flame is calculated using the nitrogen oxide generation rate and a total nitrogen oxide generation amount of a cylinder is predicted using the nitrogen oxide generation rate and the nitrogen oxide generation concentration.

Abstract: An engine system includes an intake passage, a non-deactivation exhaust passage, a second exhaust manifold, a first turbocharger including a first turbine rotated by exhaust gas flowing via the first exhaust manifold, a second turbocharger including a second turbine rotated by exhaust gas flowing via the second exhaust manifold, an exhaust outlet, a main intake circulation passage in communication with the intake passage via a compressor of the first turbocharger such that supercharging air is supplied to the intake passage, a sub intake circulation passage in communication with the main intake circulation passage via a compressor of the second turbocharger such that supercharging air is supplied to the main intake circulation passage, and a deactivation valve disposed on the sub intake circulation passage between the compressor of the second turbocharger and the main intake circulation passage so as to selectively open/close the sub intake circulation passage.

Abstract: A method of predicting a cylinder pressure of a diesel engine by a pressure predicting device may include predicting a pilot injection combustion pressure by pilot injection; predicting main combustion duration of main injection; and predicting a main injection combustion pressure after the main injection by using the pilot injection combustion pressure and the main combustion duration.

Abstract: An engine system for a vehicle may include an engine including a plurality of cylinders connected to a crankshaft, a Cylinder Deactivation (CDA) apparatus provided to at least one cylinder among the plurality of cylinders of the engine, a first flywheel mounted on the crankshaft, a second flywheel having a rotation center formed eccentrically with respect to the crankshaft by being disposed at a position corresponding to the cylinder including the CDA apparatus, and a clutch provided to the crankshaft to selectively transmit a torque of the crankshaft to the second flywheel during operation of the CDA apparatus.

Abstract: A glow plug of a vehicle preventing an interference with an injected fuel includes a preheating rod having one end protruding to the combustion chamber to selectively preheat the combustion chamber; a bellows pipe enclosing the preheating rod to maintain an air-tightness of an area where the preheating rod is inserted to the combustion chamber; a piezo element selectively pulling or pushing another end of the preheating rod; and a controller controlling a deformation of the piezo element and the preheating of the combustion chamber through the preheating rod.

Abstract: A method for controlling an operation mode of an engine implementing cylinder deactivation (CDA) by a device for controlling an operation mode, may include determining whether a CDA operation is available by using an operation state signal of a vehicle, determining a fuel consumption prediction value or an exhaust temperature prediction value by the CDA operation when the CDA operation is available: and determining whether to enter a CDA mode by using at least one of the fuel consumption prediction value and the exhaust temperature prediction.

Abstract: A method for controlling a cold starting of a diesel engine vehicle may include determining whether a cold starting condition is satisfied by detecting data for controlling a diesel engine, determining torque generated by combustion for starting the diesel engine when the cold starting condition is satisfied, determining a combustion delay and a combustion phase based on the torque and detected data, determining a main injection timing according to the determined combustion delay and combustion phase, determining a latent heat of fuel based on the torque and detected data, determining a pilot injection amount according to the determined latent heat of fuel, determining a total amount of heat by combustion based on the torque and detected data, determining a main injection amount according to the determined total amount of heat, and controlling an operation of an injector based on the main injection timing, pilot injection amount and main injection amount.

Abstract: A cylinder deactivation (CDA) system and a control method for the same and the CDA system may include a plurality of cylinder; a cylinder deactivation (CDA) apparatus selectively are configured to de-activate an operation of an exhaust valve of the partial cylinder among the plurality of cylinders; a connection pipe connecting the de-activated cylinder to the normally operated cylinder among the plurality of cylinders; an auxiliary valve apparatus configured for opening or closing the connection pipe to supply a compressed air of the de-activated cylinder among the plurality of cylinders to the normally operated cylinder; a vehicle operation state measuring device configured for measuring a vehicle operation state to output a corresponding signal; and a controller configured for controlling operations of the CDA apparatus and the auxiliary valve apparatus depending on the corresponding signal of the vehicle operation state measuring device.

Abstract: A pre-mixing engine system may include a plurality of cylinders that are combusted in a predetermined sequence; an intake manifold connected to the cylinder; a variable valve apparatus controlling an intake valve closing timing of each cylinder; an injector injecting a fuel inside each cylinder; an operation state measuring device detecting an operation state of an engine to output a corresponding signal; and a controller configured for controlling operations of the injector and the variable valve apparatus depending on the corresponding signal of the operation state measuring device, wherein the controller determines whether the operation state of the current engine is a predetermined general operation mode requirement state or a predetermined pre-mixing mode requirement state and controls the operations of the variable valve apparatus and the injector in the case of the pre-mixing mode requirement state to output a mixture of the corresponding cylinder to the intake manifold.

Abstract: A method for controlling an engine which comprises a combustion pressure sensor includes receiving a combustion pressure signal from the combustion pressure sensor. An Indicated mean effective pressure (IMEP) deviation for each cylinder and an IMEP deviation for each driving cycle for the engine are calculated based on a combustion pressure according to the received combustion pressure signal. A main injection timing is set based on a difference between the calculated IMEP deviations for the each cylinder and a difference between the calculated IMEP deviations for the each driving cycle. The engine runs by injecting a fuel according to the set main injection timing.

Abstract: A method of predicting a cylinder pressure of a diesel engine by a pressure predicting device may include predicting a pilot injection combustion pressure by pilot injection; predicting main combustion duration of main injection; and predicting a main injection combustion pressure after the main injection by using the pilot injection combustion pressure and the main combustion duration.

Abstract: An engine control apparatus includes an engine information detector for detecting engine information including an engine speed, a fuel amount, an air amount, a boost pressure, injection timing, an intake air temperature, an atmospheric pressure, and an atmospheric temperature, a combustion pressure sensor for detecting a combustion pressure of an engine, and a controller performing an IMEP control for adjusting a main injection amount and a combustion noise control for adjusting a pilot injection amount by using the engine information detected by the engine information detector and the combustion pressure detected by the combustion pressure sensor, and calculating a final main injection correction amount and a final pilot injection correction amount by using an IMEP pilot correction amount and an IMEP correction amount outputted from the IMEP control and a combustion noise correction amount outputted from the combustion noise control.

Abstract: An engine system includes an intake passage, a non-deactivation exhaust passage, a second exhaust manifold, a first turbocharger including a first turbine rotated by exhaust gas flowing via the first exhaust manifold, a second turbocharger including a second turbine rotated by exhaust gas flowing via the second exhaust manifold, an exhaust outlet, a main intake circulation passage in communication with the intake passage via a compressor of the first turbocharger such that supercharging air is supplied to the intake passage, a sub intake circulation passage in communication with the main intake circulation passage via a compressor of the second turbocharger such that supercharging air is supplied to the main intake circulation passage, and a deactivation valve disposed on the sub intake circulation passage between the compressor of the second turbocharger and the main intake circulation passage so as to selectively open/close the sub intake circulation passage.