Hyundai Motor Company

Kia Motors Corporation

Young Kyu Oh

Il Joong Hwang

Chulho Yu

Yong Kim

Yeong Jin Nam

Yoonho Cho

Jin Hong Kim

Young-Joon Park

Dongheon Park

Sung Wook Park

Jeong Ho Seo

Taeho Ahn

Se Geun Kim

Jinnam Kim

Dong Hoon Seok

An active fuel vapor purge system includes: a turbocharger having a turbine and a compressor; a canister collecting fuel vapor; a purge pump pumping the collected fuel vapor; a main purge line connecting the canister and the purge pump; a first purge line branched from the main purge line and joined to an intake manifold at downstream of the compressor; a second purge line branched from the main purge line and jointed to an intake line at upstream of the compressor; purge control solenoid valves respectively disposed in the first purge line and the second purge line; a hydrocarbon sensor measuring an amount of hydrocarbon; a pressure sensor measuring an upstream pressure and a downstream pressure of the purge pump; and a controller controlling operation of the purge pump based on the amount of hydrocarbon and pressures at a front end and at a rear end of the purge pump.

Active fuel vapor purging system and method using the same

A blended fuel injection control method may include a cold-starting determination step in which a controller determines whether a cold-starting condition is satisfied on the basis of output values that can be obtained by a vehicle; a detection step in which the controller detects the content of ethanol in blended fuel of gasoline and ethanol when determining the cold-starting condition is satisfied; and a first injection control step in which the controller controls the blended fuel to be injected selectively in one of a Multi-Point Injection (MPI) mode, an MPI & GDI mode combining MPI and Gasoline Direct Injection (GDI) modes, and a GDI mode in accordance with the content of ethanol in the blended fuel until an engine RPM reaches an early peak RPM in engine-cranking.

Blended fuel injection control method for vehicles

A method for controlling an engine having a continuous variable valve duration (CVVD) apparatus is provided. The method includes: correcting a torque required by a driver; transmitting, by a hybrid control unit (HCU), a start signal to an engine control unit (ECU) when the corrected torque satisfies conditions required to drive the engine; determining a target CVVD value for operation of an intake CVVD apparatus corresponding to the corrected torque; determining a target current value corresponding to the target CVVD value; and changing the target CVVD value to a synchronizing CVVD value when a current state of the engine is in a cranking interval, wherein the synchronizing CVVD value is configured to synchronize starting revolutions per minute (RPM) of the engine with RPM of an automatic transmission or RPM of a motor generator.

Method for controlling engine having continuous variable valve duration apparatus

For controlling injection of a mixture fuel of ethanol and gasoline in an internal combustion engine, ethanol concentration of the mixture fuel supplied to the engine is detected, target operation information related to the engine is obtained, a division scheme of a plurality of injection regions is determined based on the ethanol concentration, an injection region corresponding to the target operation information is determined in the determined division scheme of injection regions corresponding to the ethanol concentration, and while performing injection of the mixture fuel corresponding to the determined injection region, at least one of injection timing and injection duration of the mixture fuel is varied according to the ethanol concentration.

Method and system for controlling injection of mixture fuel in an internal combustion engine

A method for controlling an injector of a vehicle may include: a step of determining, by a controller, a targeted opening time and a targeted closing time for at least one injector according to a current driving condition; a step of measuring, by the controller, an closing time of the injector controlled depending on the targeted closing time; and after the measuring step, a step of determining, by the controller, a deviation of the closing time with respect to the targeted closing time and determining a learning closing time obtained by reflecting the deviation to the targeted closing time to store a corresponding driving condition, in which in the determining step, when there is the learning closing time stored for the current driving condition, the targeted closing time is configured to be determined by reflecting the learning closing time.

Method for controlling injector of vehicle

A control method for a vehicle injector includes an injection time determination step in which a controller determines whether it is necessary for multiple injectors to inject fuel according to a combustion cycle of a combustion chamber, an individual injection step in which the controller controls each of the multiple injectors to individually inject fuel at different times when the controller determines in the injection time determination step that it is necessary for the injectors to inject fuel, and a simultaneous injection step in which the controller controls each of the multiple injectors to simultaneously inject fuel after the multiple injectors individually inject fuel at different times in the individual injection step.

Control method and system for fuel injector

A method for controlling an engine in various operating modes and for controlling an engine having dual injectors, may include selecting a number of injectors configured to inject fuel based on an operating mode of the various operating modes, and injecting fuel based on a selection of whether to inject fuel while an intake valve is open, or to inject fuel while the intake valve is closed.

Method for controlling engine in various operating modes

A control method of an engine having a variable valve timing may include selecting one of a first mode and a second mode as a driving mode, retarding an intake cam to a first predetermined angle range in the first mode, and advancing an intake cam to a second predetermined angle range in the second mode.

Engine having continuous variable timing device

An engine having a variable valve timing mechanism may include a camshaft having a cam formed thereon for moving an intake or exhaust valve, a variable rotation unit disposed on the same axis with the camshaft to rotate the camshaft to have a retard angle chamber and an advance angle chamber for controlling a retard angle and an advance angle of the camshaft, a variable valve bolt having a fastening portion for fastening the variable rotation unit to the camshaft, and an oil control valve for making selective supply of hydraulic oil to the retard angle chamber and the advance angle chamber, and a valve controller disposed on an outer side of the variable rotation unit for controlling the oil control valve in the variable valve bolt.

Engine having continuously variable valve timing mechanism

A method of controlling a CVVT may include a) checking whether a predetermined time has passed, after engine starts. b) locking an actuator by driving oil control valve with different driving currents in accordance with whether a predetermined time has passed after the engine starts. c) unlocking the actuator or feed-backing control cam phase in accordance with whether the actuator is unlocked. d) feed-backing control cam phase or locking the actuator by driving oil control valve with predetermined current in accordance with whether control cam phase is not reached before the actuator is locked. e) driving the oil control valve with predetermined current to maintain the control cam phase or turning off the oil control valve, after feed-backing control cam phase or locking the actuator by driving the oil control valve with predetermined current in accordance with whether the control cam phase is not reached before the actuator is locked.

Growing community of inventors

Gwacheon-si, South Korea

Young Kyu Oh