Internal combustion engine with an improved intake system and motorvehicle thereof

Internal combustion engine comprising:

• at least a first cylinder housing, according to a reciprocating rectilinear motion, a relative first piston operatively connected to a drive shaft rotating about an engine axis,
• an intake system comprising a filter box having a bottom cover and a top cover defining an intake volume which houses at least a first intake pipe for conveying the intake air/mixture to said first cylinder, the first intake pipe being divided into a first lower trumpet and a first upper trumpet, separated from each other in order to identify a gap between an upper output edge of the first upper trumpet and a lower input edge of the first lower trumpet,
• the first upper trumpet, at its upper input edge, facing an upper injector device, the first lower trumpet facing the corresponding cylinder and being fastened to the bottom cover of the filter box,
• wherein the bottom cover of the filter box comprises a lower profile, contoured to direct a intake airflow/mixture, coming from at least one input mouth of the filter box, towards said lower input edge of the first lower trumpet.

Internal combustion engine comprising:

• at least a first cylinder housing, according to a reciprocating rectilinear motion, a relative first piston operatively connected to a drive shaft rotating about an engine axis,
• an intake system comprising a filter box having a bottom cover and a top cover defining an intake volume which houses at least a first intake pipe for conveying the intake air/mixture to said first cylinder, the first intake pipe being divided into a first lower trumpet and a first upper trumpet, separated from each other in order to identify a gap between an upper output edge of the first upper trumpet and a lower input edge of the first lower trumpet,
• the first upper trumpet, at its upper input edge, facing an upper injector device, the first lower trumpet facing the corresponding cylinder and being fastened to the bottom cover of the filter box,
• wherein the top coverof the filter box comprises an upper profile contoured to direct an intake airflow/mixture, coming from at least one input mouth of the filter box, towards said upper input edge of the first upper trumpet.

Internal combustion engine comprising:

• at least one cylinder housing, according to a reciprocating rectilinear motion, a relative first piston operatively connected to a drive shaft rotating about an engine axis,
• an intake system comprising a filter box comprising a bottom cover and a top cover joined to each other defining an intake volume which houses at least a first intake pipe which channels the intake air/mixture before entering the respective cylinder,
• wherein said first intake pipe comprises two first trumpets fixed and at least partially separate and aligned with each other, comprising a first lower trumpet and a first upper trumpet, the first upper trumpet facing an upper injector device, the first lower trumpet facing the corresponding cylinder,
• wherein the first upper trumpet is joined to the top cover by attachment means placed between the first upper trumpet and an inner side wall of the top cover.