A supercharger system is disclosed herein having a front end, a rear end, an inlet and an outlet, the system contained within a housing, wherein the supercharger system includes a rotor assembly, and a plurality of intake runners that comprise an interlaced cross-runner pattern, wherein the supercharger system comprises a front drive, front inlet configuration and an inverted orientation.

A straddled vehicle includes a duct part formed integrally with a lower case of an air cleaner and extending forward from the lower case in a vehicle front-rear direction, and a side cover including a duct formation portion placed outward of the duct part in a vehicle width direction. At least a portion of the side cover is assembled onto the duct part. A duct is defined by the duct part and the duct formation portion of the side cover.

Methods and systems are provided for indicating whether a canister purge valve in a vehicle evaporative emissions control system is degraded. In one example, an air intake system hydrocarbon (AIS HC) trap temperature may be monitored during a refueling event, and responsive to an indication that the AIS HC trap temperature change is greater than a predetermined threshold, it may be indicated that the canister purge valve is degraded. In this way, diagnosis of whether a vehicle canister purge valve is degraded may be indicated without the use of engine manifold vacuum, and may be advantageous for vehicles configured to operate for significant amounts of time without engine operation, or without intake manifold vacuum.

An intake manifold for an internal combustion engine having at least one runner having a top end, a bottom end, a front side, and a back side defining a hollow interior space wherein the top end has a first height greater than a second height of the bottom end, and a port for receiving air into the hollow interior space, the back side having cylinder holes aligning with cylinder head openings of the internal combustion engine and bolt holes for receiving bolts, each bolt having a bolt head and a bolt thread, the front side having access holes aligning with the bolt holes, such that the intake manifold can be secured to the internal combustion engine with no portion of the bolt thread lying within the hollow interior space of the intake manifold thus preventing obstruction of air circulation through the hollow interior space.

An intake apparatus includes an intake apparatus body including a plurality of intake pipes and a distribution passage including a gas passage before branching which includes a first gas passage through which the external gas flows in a first gas flow direction and a second gas passage through which the external gas flows in a second gas flow direction, the second gas passage curving relative to the first gas passage at a downstream, and a gas passage after branching including a third gas passage branched in the first gas flow direction relative to the second gas passage and a fourth gas passage branched in an opposite direction from the first gas flow direction relative to the second gas passage, an angle formed between the second gas passage and the third gas passage is smaller than an angle formed between the second gas passage and the fourth gas passage.

A system for testing a particulate filter system includes a filter controller connected to the particulate filter system and a vehicular computer configured to determine at least one engine condition. The filter controller is configured to control a condition of a component of the particulate filter system and the vehicular computer is operatively connected to the filter controller to communicate therewith. The vehicular computer compares the condition of the component of the particulate filter system with the engine condition to determine whether the component of the particulate filter system is functioning properly.

A system for testing a particulate filter system includes a filter controller connected to the particulate filter system and a vehicular computer configured to determine at least one engine condition. The filter controller is configured to control a condition of a component of the particulate filter system and the vehicular computer is operatively connected to the filter controller to communicate therewith. The vehicular computer compares the condition of the component of the particulate filter system with the engine condition to determine whether the component of the particulate filter system is functioning properly.

A mounting structure of an air intake apparatus includes an air intake apparatus including a first mounting portion made of resin and a second mounting portion made of resin, a first collar member made of metal positioned within a first mounting bore at the first mounting portion, a second collar member made of metal positioned within a second mounting bore at the second mounting portion, and a large diameter annular portion made of metal provided between the first and second collar members, the first collar member, the large diameter annular portion and the second collar member being fastened while making contact with one another in a state where the first mounting portion and the second mounting portion are fastened together relative to the cylinder head by a fastening member inserted to be positioned within the first collar member, the large diameter annular portion and the second collar member.

Methods and systems are provided for operating a split exhaust engine system that provides blowthrough air and exhaust gas recirculation to an intake passage via a first exhaust manifold and exhaust gas to an exhaust passage via a second exhaust manifold. In one example, all intake valves of an engine cylinder may be deactivated, in response to engine load below a threshold, while operating a first exhaust valve coupled to the first exhaust manifold and a second exhaust valve coupled to the second exhaust manifold at different timings. As a result, intake air may be routed from the intake passage, through an exhaust gas recirculation passage coupled between the intake passage and the first exhaust manifold, and into the engine cylinder via the first exhaust valve.

A one-way quick snap coupling includes a female annular collar including a plurality of retention lugs resiliently extending therefrom. Each retention lug has a plurality of interior one-way retention teeth. A male annular collar is receivable within the female annular collar and the male annular collar includes a plurality of exterior one-way retention teeth. The interior and exterior one-way retention teeth have cooperating leading surfaces that are angled to engage and slide past each other in an insertion direction. In addition, the interior and exterior one-way retention teeth have cooperating trailing surfaces that are angled to engage each other in a removal direction and prevent the sensor housing from being uncoupled from the air hose without damaging the one-way quick snap coupling.