A fuel supply apparatus for a general purpose engine includes a carburetor provided in an air intake line extending from an air cleaner to the general purpose engine, a pressure reduction connection channel connected to a float chamber of the carburetor and the air cleaner, a control valve provided in the pressure reduction connection channel, a pressure reduction pump provided in the pressure reduction connection channel and sucking the float chamber to reduce the pressure therein, an air fuel ratio sensor detecting the air fuel ratio of an exhaust gas discharged from the general purpose engine, and a control unit controlling the opening degree of the control valve based on a detection signal of the air fuel ratio sensor.

An apparatus and methods are provided for an air cleaner to be mounted onto an air inlet of an internal combustion engine. The air cleaner comprises an air filter that includes a filter medium disposed between a curved base and a cover. The curved base provides an interface between the air filter and the air inlet, and comprises a shape that provides clearance between the curved base and an electric choke installed onto a carburetor comprising the air inlet. The cover secures the air filter and the curved base to the air inlet such that an airstream is drawn through the filter medium and is conducted into the air inlet. A raised portion of the cover is configured to cooperate with the curved base to ensure a desired volume of the airstream is available to the air inlet at substantially all engine speeds.

Systems and methods are provided for an air filter device. In one example, the air filter device includes a housing enclosing a filter element positioned in a filter enclosure, the filter element including an outlet in fluidic communication with a downstream intake line and an inlet conduit extending through the housing and delivering air to the filter enclosure, and the inlet conduit including a wall dividing the filter enclosure from the inlet conduit. The air filter device further includes a cover sealingly attached to the wall and a peripheral lip of the housing.

Methods and systems are provided for a heating device. In one example, a system comprises a heat exchanger and an air filter arranged in a common housing, wherein the heat exchanger is configured to receive coolant from a heating device. In one example, the heating device is an electric heating device.

In an intake device for an internal combustion engine, a first resonator chamber (61) is defined between a clean side chamber (56) and a peripheral wall (8) of a case (2), and a first communication passage (61B) communicating a dust side chamber (55) with the first resonator chamber is extending along the peripheral wall of the case.

The present disclosure discloses a container of an all-terrain vehicle. The container includes: a container body including a bottom plate and a front side plate, the front side plate being connected to a front-side edge of the bottom plate, the bottom plate being defined with a first through hole, and the front side plate being defined with a second through hole in communication with the first through hole; a first cover plate detachably arranged at the first through hole; a second cover plate detachably arranged at the second through hole and detachable relative to the first cover plate.

An injector arrangement structure includes an air cleaner which is arranged at a rear side of an engine for a vehicle, a rear suspension which extends vertically at the rear side of the engine, and a first injector which is attached to the air cleaner. The air cleaner includes an outlet tube configuring a clean side of the air cleaner. The rear suspension and the outlet tube overlap each other in a side view. A partition wall dividing an intake passage vertically is provided inside the outlet tube. The first injector is attached from a lower side of the outlet tube so as to inject fuel toward the partition wall.

There is provided an air cleaner configured to be disposed behind an engine and inside a vehicle body frame. The air cleaner includes: an air cleaner case in which an intake chamber is formed; an air filter that divides the intake chamber into a dirty side and a clean side; an inlet tube configured to take in air from a vehicle rear side to the dirty side; and an outlet tube configured to send air from the clean side to the engine. The inlet tube and the outlet tube are attached to an upper side of the air cleaner case, and an expansion portion is formed on a lower side of the air cleaner case, the expansion portion being formed by expanding the clean side further downward than the dirty side.

There is provided a straddle-type vehicle, including: a pair of seat frames; a seat; an air cleaner; a battery; and a bracket. A rear portion of the air cleaner and the battery are positioned below the seat. The battery is disposed above the rear portion of the air cleaner. The bracket extends in a left-right direction of the straddle-type vehicle and passes between the rear portion of the air cleaner and the battery. A left end side and a right end side of the bracket are connected to the pair of seat frames respectively. The rear portion of the air cleaner is suspended by the bracket. The battery is installed on the bracket.

A precleaner system for an air intake system. The precleaner system includes precleaners each having flow paths that induce a rotation to air flow and separate out particulate matter. The particulate matter is ejected from an outlet port in each of the flow paths and out of a dust ejector. The precleaned air is collected into a plenum from each of the precleaners. The precleaned air can flow from the plenum to a precleaner system outlet and the precleaned air can be received by an air intake system. A cover can be used to block air flow through one of the precleaners to tune the precleaner system to the desired airflow.