Internal combustion engines having an external mixture formation and compensation tank for avoiding reignition. An internal combustion engine is provided having an external mixture formation including at least one exhaust system, at least one intake system, the intake system including at least one intake manifold, at least one throttle valve, at least one mixture forming device, at least one compensation tank, and at least one air filter.

Internal combustion engines having an external mixture formation and compensation tank for avoiding reignition. An internal combustion engine is provided having an external mixture formation including at least one exhaust system, at least one intake system, the intake system including at least one intake manifold, at least one throttle valve, at least one mixture forming device, at least one compensation tank, and at least one air filter.

An intake control device 1 includes: a body 3 including an intake passage 2; and a valve body 4 located in the intake passage 2. The intake passage 2 includes a direction continuation segment 13 in which a first major axis direction d1 and a second major axis direction d2 are approximately parallel to each other continuously from a downstream opening 6 of the body 3. The body 3 includes a seal plane 14 formed along a plane that intersects with part of the direction continuation segment 13. The valve body 4 includes a valve plane 15 formed by a plane that abuts the seal plane 14, and is configured to slide relative to the seal plane 14 via the valve plane 15 to adjust an opening degree of the intake passage 2.

An intake device for an engine is provided which can inhibit excessive cooling of EGR gas. In the intake device including an intake passage, an EGR passage, and an EGR cooler, the intake passage is provided with a lateral-side intake passage portion provided on one side of an engine body in a vehicle width direction, the EGR passage is provided with a downstream-side EGR passage portion defining the EGR passage on a downstream side of the EGR cooler and provided on the one side of the engine body in the vehicle width direction, and the downstream-side EGR passage portion is disposed such that at least a portion thereof is positioned rearward of the lateral-side intake passage portion and overlaps with the lateral-side intake passage portion when seen from the front of a vehicle.

An intake device for an engine is provided which can inhibit excessive cooling of EGR gas. In the intake device including an intake passage, an EGR passage, and an EGR cooler, the intake passage is provided with a lateral-side intake passage portion provided on one side of an engine body in a vehicle width direction, the EGR passage is provided with a downstream-side EGR passage portion defining the EGR passage on a downstream side of the EGR cooler and provided on the one side of the engine body in the vehicle width direction, and the downstream-side EGR passage portion is disposed such that at least a portion thereof is positioned rearward of the lateral-side intake passage portion and overlaps with the lateral-side intake passage portion when seen from the front of a vehicle.

An attachment mechanism for electronic equipment for an engine includes a bracket configured to hold the electronic equipment and a plurality of support portions configured to elastically support the bracket with respect to a head cover of the engine. The support portions are disposed such that a maximum distance between two support portions of the support portions in a direction parallel to a shaft center of a crankshaft of the engine is longer than a maximum distance between the two support portions of the support portions in a direction perpendicular to the shaft center of the crankshaft of the engine.

An intake system of an engine including an intake manifold, which includes an intake air introducing pipe and a plurality of independent intake pipes, is provided. Each of the independent intake pipes has an arc shape surrounding the intake air introducing pipe from outside with a space. A first independent intake pipe is curved more in the cylinder lined-up direction than a second. From the side in the cylinder lined-up direction, the arc shape of the second independent intake pipe is more distant from the intake air introducing pipe. To a first member constituting part of the intake air introducing pipe, a second member is joined to form the arc shape of the first independent intake pipe. A third member disposed radially outward from the first member is joined to the second member to form the arc shape of the second independent intake pipe.

An intake system of an engine including an intake manifold, which includes an intake air introducing pipe and a plurality of independent intake pipes, is provided. Each of the independent intake pipes has an arc shape surrounding the intake air introducing pipe from outside with a space. A first independent intake pipe is curved more in the cylinder lined-up direction than a second. From the side in the cylinder lined-up direction, the arc shape of the second independent intake pipe is more distant from the intake air introducing pipe. To a first member constituting part of the intake air introducing pipe, a second member is joined to form the arc shape of the first independent intake pipe. A third member disposed radially outward from the first member is joined to the second member to form the arc shape of the second independent intake pipe.

An intake system of an engine including an intake manifold, which includes an intake air introducing pipe and a plurality of independent intake pipes, is provided. Each of the independent intake pipes has an arc shape surrounding the intake air introducing pipe from outside with a space. A first independent intake pipe is curved more in the cylinder lined-up direction than a second. From the side in the cylinder lined-up direction, the arc shape of the second independent intake pipe is more distant from the intake air introducing pipe. To a first member constituting part of the intake air introducing pipe, a second member is joined to form the arc shape of the first independent intake pipe. A third member disposed radially outward from the first member is joined to the second member to form the arc shape of the second independent intake pipe.

An intake system of an engine including an intake manifold, which includes an intake air introducing pipe and a plurality of independent intake pipes, is provided. Each of the independent intake pipes has an arc shape surrounding the intake air introducing pipe from outside with a space. A first independent intake pipe is curved more in the cylinder lined-up direction than a second. From the side in the cylinder lined-up direction, the arc shape of the second independent intake pipe is more distant from the intake air introducing pipe. To a first member constituting part of the intake air introducing pipe, a second member is joined to form the arc shape of the first independent intake pipe. A third member disposed radially outward from the first member is joined to the second member to form the arc shape of the second independent intake pipe.