Output performance of the engine may be maximized by a configuration in which air is supplied so as to maximize volumetric efficiency of the respective cylinders in a multi-cylinder engine including a plurality of cylinders.

A thermal fuel delivery system includes an insertion assembly and a fuel device. The insertion assembly includes a housing defining a cavity for housing the fuel device. The housing is disposed above and coupled to a pair of frame members via a plurality of connecting members. The frame members extend laterally away from the housing. The insertion assembly further includes an intake manifold coupled to the housing via a tube. A plurality of runner tubes extend laterally away from the intake manifold and pass through the frame members at an inner portion of the frame members and terminate at an outer portion of the frame members.

An engine cover system for joining a cover with an intake manifold body. A plurality of structural ribs project from an external surface of the body including a pair of parallel ribs. Each parallel rib carries an integrally-molded U-shaped receiver strip extending transversely from the parallel ribs to form slots having closed ends proximate a first edge of the body and slot openings defined by respective edges of the receiver strips. The engine cover is comprised of a shroud, first and second radial arms, and first and second hinge pins projecting from the first and second radial arms, respectively. The hinge pins are configured to slide into the slots via the slot openings into the closed ends. First and second elastomeric ferrules are installed on the first and second hinge pins, respectively, configured to be compressed by the receiver strips when captured at the closed ends.

An engine cover system for joining a cover with an intake manifold body. A plurality of structural ribs project from an external surface of the body including a pair of parallel ribs. Each parallel rib carries an integrally-molded U-shaped receiver strip extending transversely from the parallel ribs to form slots having closed ends proximate a first edge of the body and slot openings defined by respective edges of the receiver strips. The engine cover is comprised of a shroud, first and second radial arms, and first and second hinge pins projecting from the first and second radial arms, respectively. The hinge pins are configured to slide into the slots via the slot openings into the closed ends. First and second elastomeric ferrules are installed on the first and second hinge pins, respectively, configured to be compressed by the receiver strips when captured at the closed ends.

An intake manifold for an internal combustion engine comprises upper and lower shell members with outer flanges. The shell members define a manifold cavity having a plenum and a plurality of runners. The upper shell includes an upper post formed as an indentation into the plenum with a tunnel wall and a terminus wall. The lower shell includes a lower post formed as an indentation into the plenum with a tunnel wall and a terminus wall. The terminus walls are attached to provide a brace across the plenum. One of the posts includes an orifice penetrating the tunnel wall. A sealed coupler extends from the one post and is adapted to receive a secondary gas for mixing within the plenum. Thus, secondary gases can be introduced without additional structures that could impede gas flow and could increase manufacturing cost.

An intake manifold with a single and dual plane adapter is provided. The intake manifold includes a plenum chamber. The plenum chamber may include a first side, a second side, a bottom portion, and a top portion. The adapter may include a guide rail attached to the plenum chamber and forming a channel in between. A divider is formed to fit within the channel. An actuator is operatively connected to extend and retract the divider within the channel. Therefore, the divider includes an extended position forming a dual chamber within the plenum chamber, and a retracted position forming a single chamber within the plenum chamber.

An intake manifold M1 includes: a surge tank 10, formed in an elongated tubular shape in a direction of a predetermined axis S; branch pipes 20, extending from the surge tank; an upstream tubular part 50, continuous on an upstream side of the surge tank; an opening part 60, open at an upstream end of the upstream tubular part; a flange part 70, formed around the opening part; an annular seal groove 80, formed at the flange part around the opening part; and fastening parts 90, formed at the flange part around the annular seal groove to fasten a throttle unit. A groove width of the annular seal groove 80 is formed to decrease in the vicinity of the fastening part.

An internal combustion engine, including a piston, a cylinder, and an output shaft, wherein the piston is arranged for reciprocating motion within the cylinder, driven by combustion, and the piston is coupled to the output shaft by a coupling such that said reciprocating motion of the piston drives rotation of the output shaft, the coupling being arranged such that the piston has sinusoidal motion when plotted against rotational angle of the output shaft.

Disclosed is a mixing manifold for mixing intake air and exhaust gas recirculation (EGR) air in an engine system. The mixing manifold includes a manifold chamber into which the intake air and the EGR air are received, the manifold chamber being an open, no mix-type chamber devoid of turbulence-inducing passages. The mixing manifold further includes a throat section having an upper end at the manifold chamber and extending along a longitudinal axis to a lower end, the lower end having a cross-section that is less than a cross-section of the upper end. The mixing manifold further includes a plenum having a pancake body with an upper wall at the lower end of the throat section and a lower wall spaced from the upper wall by side walls defining an interior volume leading from the throat section to a front outlet opening.