A control apparatus includes a throttle configured to adjust an amount of air flowing in an intake passage of an engine, an accelerator opening sensor configured to detect an accelerator opening, a throttle opening sensor configured to detect an opening of the throttle, and a control unit configured to control the opening of the throttle. The control unit includes a setting unit configured to set a target opening and set a control amount of the throttle based on a deviation between the target opening and the opening detected by the throttle opening sensor, and a correction unit configured to, if the target opening is not more than a predetermined opening, set a correction amount of the control amount such that the opening of the throttle becomes large independently of the deviation.

An electronic throttle body with an improved structure includes a throttle body. A plurality of vertically through airflow channels are provided on the throttle body, and a butterfly valve controlling a vent flow and a fuel atomizing ring configured to atomize fuel are arranged in each airflow channel. Centers of one or more butterfly valves are connected in series through rotating shafts to implement linked flipping, the rotating shafts are arranged parallel to each other, a drive gear is fixedly mounted to one end of each rotating shaft extending out of the throttle body coaxially, and the rotating shafts rotate synchronously through a servo driving apparatus. The servo driving apparatus and electrically controlled sprays respond synchronously, thereby improving the combustion efficiency of fuel in an engine. When the engine is idle, butterfly valves are directly driven through the servo driving apparatus to accurately control an air inflow of the engine.

A valve device includes a rotation shaft, a valve body, and a biasing portion. The valve body is configured to be rotationally displaceable about the rotation shaft between a closed position and an open position. The biasing portion biases the valve body so as to cause the valve body to approach the closed position. The valve body includes an upstream wall arranged in a position upstream of the rotation shaft in a flow direction of the fluid when the valve body is in the closed position. The valve body includes a rotation end, which is an end distal from the rotation shaft and moves downstream in the flow direction of the fluid in response to a displacement of the valve body from the closed position to the open position, and the rotation end is shaped to project upstream when the valve body is in the closed position.

In an electric actuator, one end portion of a return spring is hooked to a first slit formed in a radially outer guide of an output gear, so that the return spring is twisted for a predetermined angle that is slightly smaller than an initial set angle. A tilted slit portion is formed at an opening of a second slit that is formed in a covering wall of a spring installation member to twist the return spring to a predetermined initial set angle. Thereby, simultaneously with assembling of a valve shaft to the output gear, the return spring is twisted for the initial set angle. Thus, an assembling work of the electric actuator can be simplified.

A combination lever for a carburetor is an integrated shutoff lever and fuel valve. The combination lever includes a longitudinal portion for a handle and a cylindrical portion including a fuel path for the fuel valve. A carburetor casing is shaped to form a valve chamber and a carburetor chamber. The valve chamber supports the cylindrical portion. A directional cavity formed in the cylindrical portion of the combination lever regulates a flow of fuel to the carburetor chamber according to a rotation of the combination lever. At one position the directional cavity opens the fuel path so that fuel flows into the carburetor chamber. At another position the directional cavity closes the fuel path so that the flow of fuel is blocked. The combination lever may also include an abutment portion to engage a switch for completing an electrical shutoff path to an engine coupled to the carburetor.

An internal combustion engine may include a housing and at least one cavity arranged therein for receiving a coolant flow. An exhaust gas cooler may be provided for cooling an exhaust gas flow. The exhaust gas cooler may be configured as a stacked disc cooler including at least two stacking discs, an exhaust gas inlet, a cover plate and a screw-mounting plate for screw-mounting to the housing. The exhaust gas cooler may protrude into the cavity of the housing when the screw-mounting plate is mounted to the housing. The screw-mounting plate may have a spacer element disposed at the exhaust gas inlet. The spacer element may protrude in a direction of the at least two stacking discs and enlarge a distance between the screw-mounting plate and an adjacent stacking disc of the at least two stacking discs to position the exhaust gas cooler further into the cavity.

A spark ignition type engine enabling engine startability to be favorable is provided. The spark ignition type engine includes a main intake-air passage; a throttle valve of the main intake-air passage; a bypass intake-air passage bypassing the throttle valve; an ISC valve of the bypass intake-air passage; and an electronic control device that controls an engine speed by adjusting an opening degree of the ISC valve, in which when the engine is started, cranking is performed at a cranking opening degree at which the ISC valve is narrowed by a predetermined amount from a fully opened state by control of the electronic control device, so that an intake-air negative pressure is generated on an intake-air downstream side of the ISC valve.

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.

A controller may identify an indication to initiate an engine braking procedure associated with an engine of a machine. The controller may obtain, based on identifying the indication to initiate the engine braking procedure, information relating to a requested amount of engine braking power of the engine. The controller may cause one or more components of a variable geometry turbocharger (VGT) of the engine to adjust, and a throttle valve of the engine to adjust, based on the information relating to the requested amount of engine braking power of the engine.

A combustion air intake apparatus for a truck, tractor, or bus vehicle for highway use includes an air deflecting element that is selectively deployable to cause dynamic air pressure created by vehicle motion to increase static air, pressure within the intake apparatus under appropriate conditions. Deployment or retraction of the air deflecting element is responsive to at least one of forward speed of the vehicle, air pressure downstream of an air inlet opening, or throttle position, and may further be responsive to detection of precipitation and/or particulate material. An air deflecting element may include a moveable plate or flap, moveable louvers, or a moveable duct.