An intake swirl gasket is disclosed herein. It is installed between a cylinder head and an intake manifold and comprises plural airflow holes for respectively communicating with plural intake passages of the cylinder head; and plural diversion devices respectively disposed in the plural airflow holes and each having an axis and plural splitter blades extended from the axis for connecting to an inner wall of each of the plural airflow holes, wherein each of the plural splitter blades is shaped as an arc to form a recessed surface towards the intake manifold at one side thereof and a convex surface towards the cylinder head at the other side thereof, and wherein an included angle between each of the plural splitter blades and an end face of the intake swirl gasket oriented towards the cylinder head ranges from 50 to 80 degrees.

An intake swirl gasket is disclosed herein. It is installed between a cylinder head and an intake manifold and comprises plural airflow holes for respectively communicating with plural intake passages of the cylinder head; and plural diversion devices respectively disposed in the plural airflow holes and each having an axis and plural splitter blades extended from the axis for connecting to an inner wall of each of the plural airflow holes, wherein each of the plural splitter blades is shaped as an arc to form a recessed surface towards the intake manifold at one side thereof and a convex surface towards the cylinder head at the other side thereof, and wherein an included angle between each of the plural splitter blades and an end face of the intake swirl gasket oriented towards the cylinder head ranges from 50 to 80 degrees.

An intake air control apparatus of an engine includes an Intake manifold configured to guide intake air into a plurality of engine cylinders. A plurality of first intake air passages communicate with the cylinders. A plurality of second intake air passages are disposed in parallel with the first intake air passages and communicate with the cylinders. An Intake throttle shaft passes through the first intake air passages. An intake air throttle valve is disposed inside the first intake air passages, rotates with the Intake throttle shaft, and opens/closes the first intake air passage. A swirl throttle shaft passes though the second intake air passages. A swirl throttle valve is disposed inside the second intake air passages, rotates together with the swirl throttle shaft, and opens/closes the second intake air passages. An actuator rotates selectively the Intake throttle shaft and the swirl throttle shaft. A controller controls the actuator.

The purpose of the present invention is to provide an engine with reforming cylinders which are fuel reforming devices capable of supplying a reformed fuel according to the outputs of outputting cylinders. The engine is provided with the outputting cylinders for burning the fuel and the reforming cylinders which are the fuel reforming devices for reforming the fuel through the reciprocating motions of pistons. The amount of reformed fuel supplied to all the outputting cylinders is changed according to the outputs of the outputting cylinders while maintaining the amount of supplied fuel and the amount of suctioned gas, which are supplied into one reforming cylinder.

This air intake apparatus is mounted on an in-line multi-cylinder engine, and includes a surge tank that includes a throttle body mounting portion at a central portion thereof, one air intake pipe, which is single, and the other air intake pipe, which is single, connected to one end and the other end of the surge tank in a left-right direction, respectively, a first air intake pipe group that is connected to the one air intake pipe and includes a plurality of branched air intake pipes, and a second air intake pipe group that is connected to the other air intake pipe and includes the same number of branched air intake pipes as the plurality of branched air intake pipes.

This air intake apparatus is mounted on an in-line multi-cylinder engine, and includes a surge tank that includes a throttle body mounting portion at a central portion thereof, one air intake pipe, which is single, and the other air intake pipe, which is single, connected to one end and the other end of the surge tank in a left-right direction, respectively, a first air intake pipe group that is connected to the one air intake pipe and includes a plurality of branched air intake pipes, and a second air intake pipe group that is connected to the other air intake pipe and includes the same number of branched air intake pipes as the plurality of branched air intake pipes.

In an intake apparatus of an internal combustion engine, an EGR gas inlet port of each of plural EGR gas distribution pipes is provided at a position at which a volume of an intake port from a surge tank to the EGR gas inlet port is equal to or greater than a volume of an EGR gas introduced to an intake pipe from each of the EGR gas distribution pipes during one cycle of the internal combustion engine and at a position towards the surge tank relative to a center of the intake port in a flow direction thereof.

One exemplary embodiment of the present disclosure relates to an engine intake port structure. According to the engine intake port structure of the exemplary embodiment of the present disclosure, a chamfer is formed to be offset to either side from an end corner of an intake port. Accordingly, the inflow of a fuel gas is concentrated on a side in which an opening width of the chamfer is wide at the beginning of an opening stage when the intake port is opened/closed by a valve unit, and after the intake port is opened, the opening width is formed to be similar at four sides of the valve unit such that swirls formed in the fuel gas is weakened. That is, complete combustion of the fuel can be anticipated since the length of time during which the fuel gas remains in a combustion chamber is extended.

An intake system may include an intercooler configured to cool an air supplied to an engine, and an intake manifold configured to supply the air which is passed through the intercooler into at least one cylinder, and having a first runner and a second runner, in which the air which is exhausted from the intercooler is selectively supplied into at least one of the first runner and the second runner, and at least one cylinder which is communicated with the first runner is separated from at least one cylinder which is communicated with the second runner.

An intake system may include an intercooler configured to cool an air supplied to an engine, and an intake manifold configured to supply the air which is passed through the intercooler into at least one cylinder, and having a first runner and a second runner, in which the air which is exhausted from the intercooler is selectively supplied into at least one of the first runner and the second runner, and at least one cylinder which is communicated with the first runner is separated from at least one cylinder which is communicated with the second runner.