Intake device for an internal combustion engine having impulse charging
AssigneeFilterwerk Mann & Hummel GmbH
InventorsJochen Linhart, Michael Fasold
Life of this patent
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Abstract
An intake head device for an internal combustion engine, which is suitable for impulse charging and/or residual exhaust gas purging, including a pressure accumulator (24) which may apply overpressure to the pressure passage via a pressure passage, so that this produces residual exhaust gas purging of the cylinder (16) when the inlet valve (18) is open and the impulse flap (21) is closed. The impulse charging is performed by a partial vacuum which is generated in the accumulator passage (22) by the air intake of the cylinder (16). The pressure accumulator arrangement of the invention has the advantage that the closing time of the flap (21) may be longer.
Claims10
An intake device for an internal combustion engine, said intake device comprising:
- an inlet for combustion air,
- at least one intake passage per cylinder of the internal combustion engine, which extends to an outlet for connection to an engine cylinder intake;
- an intake valve for closing each outlet;
- a first closing element positioned in the intake passage downstream of the intake valve, said first closing element forming an accumulator passage from a part of the intake passage between said first closing element and the intake valve,
- a pressure accumulator which is connected to the accumulator passage via a connection passage, and
- a second closing element positioned in said connection passage.
Dependencies are inferred from the claim text.