JPWO2023053346A5 - - Google Patents

Claims (10)

a partition portion (70) extending in an intake flow direction so as to divide an intake passage (60d) downstream of the throttle valve (62c) into a plurality of flow paths;
a resonator (77) provided downstream of a middle portion (70m) of the partition portion (70) in the intake air flow direction so as to communicate with the intake passage (60d),
When a direction from a crankshaft (12) side to a cylinder head (24) side in a direction of a cylinder axis (C) of the internal combustion engine is defined as a first direction,
the partition portion (70) is provided so as to divide the intake passage (60d) into a first intake flow path (72) and a second intake flow path (74) which are arranged in sequence in the first direction,
The fuel injection valve (78) is provided on the second intake passage (74) side,
An intake device (S) for an internal combustion engine, characterized in that the fuel injection direction of the fuel injection valve (78) is approximately parallel to an axis (77d) of a downstream outlet portion (77c) in a connecting passage (77b) connecting the resonator (77) to the intake passage (60d). The intake device (S) of an internal combustion engine as described in claim 1, characterized in that the axis (77d) of the downstream outlet portion (77c) of the communicating passage (70b) connecting the resonator (77) to the intake passage (60d) is designed to face the combustion chamber (32). The intake device (S) of an internal combustion engine as described in claim 1 or claim 2, characterized in that the resonator (77) is directly connected to a cylinder head (24) of the internal combustion engine, which defines a ceiling surface (24t) of the combustion chamber (32), via the communicating passage (77b). (delete) An intake device (S) for an internal combustion engine as described in any one of claims 1 to 3, characterized in that the communicating passage (77b) connecting the resonator (77) to the intake passage (60d) is connected to a downstream portion (74d) of the second intake flow path (74) or a downstream junction (72f) of the first intake flow path (72) and the second intake flow path (74). When a virtual plane (IS) is defined that passes through a center of an intake valve port (34) facing the combustion chamber (32) and opened and closed by an intake valve (44) and a center of an exhaust valve port (36) facing the combustion chamber (32) and opened and closed by an exhaust valve (46) and extends parallel to the cylinder axis (C),
An intake device (S) for an internal combustion engine as described in any one of claims 1 to 3 and claim 5, further comprising a deflection portion (DP) configured to deflect the intake air from the first intake passage (72) to the combustion chamber (32) to one side of the imaginary plane (IS). 7. The intake system (S) for an internal combustion engine according to claim 1, wherein a flow passage cross-sectional area of the second intake passage (74) is larger than a flow passage cross-sectional area of the first intake passage (72). (delete) An intake device (S) for an internal combustion engine as described in any one of claims 1 to 3 and claims 5 to 7, characterized in that a tumble control valve (75) for opening and closing the second intake flow path (74) is further provided at the upstream end (70u) of the partition portion (70) or upstream of the upstream end (70u). An intake device (S) for an internal combustion engine as described in any one of claims 1 to 3, claims 5 to 7 and claim 9, further comprising a notch (77e) provided in a downstream outlet portion (77c) of a communication passage (77b) connecting the resonator (77) to the intake passage (60d).