An engine includes fuel system components provided on a cylinder head, a purge control valve that controls an amount of evaporated fuel purged to a portion of an intake passage on a downstream side of a throttle valve, and intake pipes that form the portion of the intake passage on the downstream side of the throttle valve and extend in a cylinder array direction, in which the purge control valve is disposed in front of the intake pipes and the fuel system components are disposed on an opposite side of the purge control valve across the intake pipes in vehicle front view or vehicle side view.

Disclosed is an engine which comprises: an engine body comprising a cylinder head and a cylinder block; an inlet duct attached to the engine body; and a fuel system component disposed between the engine body and the inlet duct, wherein the inlet duct is disposed on a vehicle forward side of the engine body when mounted to a vehicle, and wherein the inlet duct has: a fuel system component-corresponding portion located in a zone overlapping the fuel system component when viewed from the vehicle forward side, and a region located adjacent to the fuel system component-corresponding portion and having a lower rigidity than the fuel system component-corresponding portion.

An intake manifold includes: multiple branch pipes having downstream ends fastened to a front or rear surface of a cylinder head; a main pipe connected to upstream ends of the branch pipes; and a cover including a cover main body attached to an upper surface of a portion of at least one of the branch pipes to define a blow-by gas passage, and a protrusion protruding upward from the cover main body, the portion of the at least one of the branch pipes being adjacent to the cylinder head, wherein the protrusion is spaced apart from the cylinder head in a fore and aft direction such that a fuel line positioned above the downstream ends of the branch pipes is interposed between the protrusion and the cylinder head in the fore and aft direction, the protrusion being positioned to overlap a part of the fuel line as seen from front.

An engine includes fuel system components provided on a cylinder head, a purge control valve that controls an amount of evaporated fuel purged to a portion of an intake passage on a downstream side of a throttle valve, and intake pipes that form the portion of the intake passage on the downstream side of the throttle valve and extend in a cylinder array direction, in which the purge control valve is disposed in front of the intake pipes and the fuel system components are disposed on an opposite side of the purge control valve across the intake pipes in vehicle front view or vehicle side view.

The present invention provides a protective construction of a fuel pump. The protective construction includes a pump shield, disposed on an internal-combustion engine, wherein a specified interval exists at a carriage side of a vehicle in opposite to a high-pressure fuel pump and the pump shield overlaps the high-pressure fuel pump in a front and rear direction. The pump shield includes: a base portion having a width increasing gradually towards the high-pressure fuel pump; a left protective arm portion and a right protective arm portion, extending diagonally and integrally extend upwards from a specified location of the base portion to the side of the high-pressure fuel pump, wherein an interval between the left protective arm portion and the right protective arm portion increases gradually towards the high-pressure fuel pump, and a beam portion, integrally extending between the left protective arm portion and the right protective arm portion.

A protector protects a high-pressure fuel pump for an internal combustion engine. A metal collar is insert-molded into a plate-shaped fiber reinforced plastic portion made of a fiber reinforced plastic of the protector. An outer circumferential surface of the collar includes an uneven portion and a smooth surface. The uneven portion includes recesses and projections arranged alternately in a thickness direction of the fiber reinforced plastic portion. The smooth portion includes a smooth surface parallel to the thickness direction of the fiber reinforced plastic portion. The uneven portion and the smooth portion are arranged in the thickness direction on the outer circumferential surface of the collar.

A protector protects a high-pressure fuel pump of an internal combustion engine. The protector and the high-pressure fuel pump are fastened to an engine body by a bolt inserted through a metal collar. The protector further includes an elastic insulating layer located between the collar and a carbon fiber reinforced plastic portion. The collar is embedded in the carbon fiber reinforced plastic portion with the insulating layer compressed.

The present disclosure provides a fuel rail for use with an internal combustion engine. The fuel rail includes a plurality of fingers extending away from the fuel rail. The fingers are configured to interface with adjacent engine parts under crash conditions.

An intake manifold for an internal combustion engine includes a plurality of pieces joined with each other at a linearly extending joint. The pieces include a first piece and a second piece. The joint of the first piece and the second piece includes a first portion and a second portion excluding the first portion. The intake manifold is configured so that the first portion is opposed to a fuel system component of the internal combustion engine when the intake manifold is coupled to the internal combustion engine. A force required to separate the second piece from the first piece is referred to as a joining force. The joining force at the first portion is greater than the joining force at the second portion.

Provided is a protective structure (64) for a fuel pipe (45) extending along the intake side of an engine main body (9) under an intake manifold (20). A protective member (61) is placed in front of the fuel pipe. The protective member includes a pair of legs (64, 65) secured to the intake side of the engine main body, a main body (63) extending from the legs upward in an arcuate manner along a front side of the fuel pipe and bent rearward in an upper part thereof, and an abutting projection (63G) extending from an upper end of the main body and projecting upward and rearward. A fastening member (26, 27) is passed through a flange of the intake manifold, and includes an engagement feature (36) positioned behind a free end of the abutting projection. The protective member minimizes the loading transmitted to the fuel pipe at the time of a vehicle crash.