Hyundai Motor Company

Kia Motors Corporation

Kia Corporation

Sang Bong Han

Choo Saeng Choi

Sang Suk Lee

Il Nam Lee

An oil pressure switch, which is connected in an oil path of a piston oil cooling jet to diagnose oil pressure, includes an upper body and a lower body, in which a plunger vertically moves according to oil pressure; a fixing plate that is disposed between the upper body and the lower body; a moving plate that selectively contacts a fixing plate according to movement of the plunger; a spring that generates an elastic force in a direction in which the moving plate selectively contacts the fixing plate; an output terminal that outputs an output signal according to contact between the moving plate and the fixing plate; and a parallel resistor that is electrically connected with the output terminal and electrically connected with a control resistor of a controller.

Oil pressure switch, apparatus for diagnosing piston cooling oil jet, and method of controlling the same

A fuel vapor purge system may include a turbocharger including a turbine disposed in an exhaust line, and a compressor; a canister connected to a fuel tank through a vapor line; a fuel pressure detector configured for detecting pressure in the fuel tank; a canister closing valve selectively closing an atmospheric path provided in the canister; a purge control solenoid valve disposed in a main purge line connected to the canister and selectively closing fuel vapor collected at the canister; a first check valve disposed in a first purge line and preventing the fuel vapor flowing along the first purge line from flowing reversely; a second check valve disposed in a second purge line preventing the fuel vapor flowing along the second purge line from flowing reversely; a differential pressure generating valve disposed in the intake line, and generating negative pressure; and an intake pressure sensor disposed in the intake line between the differential pressure generating valve and the compressor.

Fuel vapor purge system and method for diagnosing leakage of fuel vapor using the same

An exhaust system having a differential pressure sensor may include an intake pipe that houses fresh air from the outside to supply the fresh air to a turbocharger; an exhaust pipe that supplies an EGR gas, having passed through a Diesel Particulate Filter (DPF) to upstream of the turbocharger to mix with the fresh air; and a differential pressure sensor that measures a pressure difference between the front end portion and the rear end portion of the DPF, wherein the differential pressure sensor is directly mounted in the exhaust pipe that is disposed at the rear end portion of the DPF.

Growing community of inventors

Hwaseong-si, South Korea

Sang Bong Han