A charge forming device includes a housing having an inlet chamber in which a supply of fuel is received, a vent passage communicating with the inlet chamber and a throttle bore with an inlet through which air is received, a throttle valve carried by the housing with a valve head movable relative to the throttle bore to control fluid flow through the throttle bore, a vent valve. The vent valve is carried by the housing and has a valve element that is movable between an open position wherein fluid may flow from the inlet chamber through the vent passage and a closed position where fluid is prevented or inhibited from flowing out of the inlet chamber through the vent passage, the vent valve being electrically actuated, and wherein the vent valve is actuated as a function of a pressure within the inlet chamber or the vent passage.

In at least some implementations, a charge forming device for a combustion engine includes a throttle body and a throttle valve. The throttle body has a throttle bore with an inlet through which air flows into the throttle bore and an outlet from which a fuel and air mixture exits the throttle bore. The throttle bore has a throat between the inlet and outlet and the throat has a reduced flow area compared to at least one of the inlet and outlet. The throttle valve has a valve head received within the throat of the throttle bore and movable relative to the throttle body between a first position and a second position wherein the flow area between the valve head and the throttle body is greater when the valve head is in the second position than in the first position.

Present embodiments provide an electronic fuel injection throttle body which may be used with a variety of engines of different manufacturers. The throttle body may be used to replace mechanical or hydraulically controlled carburetors with electronic fuel injection. The bores or barrels of the throttle body may comprise one or more stackable fuel injectors. The fuel component cover may include a regulator with a housing formed integrally with the fuel component cover or alternatively, a regulator may be located remotely.

Present embodiments provide a throttle body which may be used with a variety of engines of different manufacturers. The throttle body may be used to replace mechanical or hydraulically controlled carburetors with electronic fuel injection. The throttle body may provide improved fuel pathways through and about the throttle body in order to move fuel to opposed side. The throttle bodies may have improved configuration of the fuel injectors. Further, the throttle body may have computer mounted on the throttle body and a notch formed in the throttle body to define a wire routing pathway from the computer to the injectors.

An electronic fuel injection throttle body unit has a core body with two side components. The two side components each including a fuel delivery passage. Four air intake passages extending vertically through the throttle body. Valves are rotatable within the air intake passages. The valves being connected to valve shafts that rotate about respective valve shaft axes. The valve shaft axes and the fuel delivery passages are perpendicular to each other.

An electronic throttle valve apparatus including a suction pressure sensor provided on the upstream of a throttle valve to measure pressure of an intake air that flows into the throttle valve is provided. The electronic throttle valve apparatus includes a throttle housing having one side installed in an intake manifold of an engine. Within an inside of the throttle housing, a throttle valve is rotatably provided. The electronic throttle valve apparatus further includes an air tube fastened to the other side of the throttle housing and fastened to an intake flow line, and a suction pressure sensor provided in the air tube and configured to measure pressure of an intake air that flows through the intake flow line. Accordingly, the suction pressure sensor is provided in the air tube that is fastened to the throttle housing, and thus the pressure of the intake air that flows into the throttle valve is easily measured.

A throttle device 1 includes a throttle valve 2, and a throttle body 6 having a through hole 4 where the throttle valve 2 is arranged, the throttle body 6 including a connection part 28 to which a flow passage forming member 26 is finable, the flow passage forming member 26 communicating with the through hole 4 and forming an intake passage 3 with the through hole 4, and the connection part 28 having a contour 50 defined by a minor axis L1 along an axis direction of a rotatable shaft 12 of the throttle valve 2 and a major axis L2 which is longer than the minor axis L1.

A temperature control throttle device is provided. The temperature control throttle device includes: at least one throttle; a first pipeline and a second pipeline, wherein, the first pipeline and the second pipeline are connected to the same side of the at least one throttle in an air flow direction in parallel, and wherein the second pipeline is provided with a heat exchanger that heats air flowing through the second pipeline with engine coolant, engine oil or engine exhaust gas as a heat source.

A compact assembly for accurately measuring the air flow in an air intake duct of an internal combustion engine that is easy to manufacture and maintain. The assembly includes a housing with an inlet opening, an outlet opening, a channel with an inner wall defining a predetermined cross-sectional area and a closure member that is movably mounted in the channel between a closed and opened position. A first annular chamber is situated upstream from the closure member and a second annular chamber is placed downstream of the closure member. Each chamber has an inner chamber wall with a number of apertures that are in fluid communication with the channel. A first pressure sensor is connected to the first chamber for measuring a pressure, and a second pressure sensor is connected to the first chamber and the second chamber for measuring a difference in pressure.

A motor-driven throttle valve for an exhaust duct and having: a tubular duct, which is designed so that exhaust gases can flow through it; a throttle shutter, which is arranged inside the tubular duct and is mounted so as to rotate around a rotation axis; a first shaft, which is mounted so as to rotate around the rotation axis and supports the throttle shutter; an electric actuator, which is provided with a second shaft and is designed to rotate the first shaft around the rotation axis; and a tank, which is “U”-shaped, embraces a part of an external surface of the electric actuator, has an inlet pipe configured to allow a flow of a cooling liquid directed into the tank, and has an outlet pipe configured to allow a flow of the cooling liquid directed out of the tank.