Abstract: An engine system having a turbocharger, in which an intake manifold is integrally formed, may include an intercooler that cools intake air supplied from the turbocharger, an EGR cooler that cools EGR gas supplied from an exhaust manifold, the intake manifold in which the intake air and the EGR gas supplied from the intercooler and the EGR cooler are mixed and that supplies a combustion chamber with the mixed gas, and a distribution unit that is mounted in the intake manifold and includes distribution pipes. One or each of the distribution pipes may receive the EGR gas from a connection hole through which the EGR gas is supplied and exhaust the EGR gas through an outlet towards an intake port.

Abstract: A method of controlling an oil pump of an engine with a variable valve lift apparatus includes: detecting the operation status of a vehicle; determining whether mode change conditions of a variable valve lift apparatus are satisfied; determining whether the mode change condition of the variable valve lift apparatus is a condition for changing from a low lift to a high lift; comparing whether the current oil hydraulic pressure is larger than the current necessary hydraulic pressure, when the mode change condition of the variable valve lift apparatus is a condition for changing from a low lift to a high lift; and increasing oil pressure by controlling the oil pump, when the current oil hydraulic pressure is not larger than the current necessary hydraulic pressure.

Abstract: A turbo charge system of an engine minimizes energy loss of exhaust gas as a consequence of a crossover pipe that connects exhaust manifolds respectively mounted to cylinder heads at both sides of the engine with each other and that is mounted in each cylinder head, and the crossover pipe is formed as a double pipe structure. The turbo charge system of the engine may include a pair of exhaust manifolds respectively mounted to cylinder heads at both sides of the engine; a pair of turbo chargers connected respectively to the pair of exhaust manifolds and increasing intake air amount by using energy of exhaust gas; and a crossover pipe connecting the pair of exhaust manifolds with each other, wherein a crossover pipe is mounted in each cylinder head.

Abstract: A turbo charge system of an engine minimizes energy loss of exhaust gas as a consequence of a crossover pipe that connects exhaust manifolds respectively mounted to cylinder heads at both sides of the engine with each other and that is mounted in each cylinder head, and the crossover pipe is formed as a double pipe structure. The turbo charge system of the engine may include a pair of exhaust manifolds respectively mounted to cylinder heads at both sides of the engine; a pair of turbo chargers connected respectively to the pair of exhaust manifolds and increasing intake air amount by using energy of exhaust gas; and a crossover pipe connecting the pair of exhaust manifolds with each other, wherein a crossover pipe is mounted in each cylinder head.