摘要:
An intake manifold is provided that controls swirl on entry to a combustion chamber. Each intake manifold includes a fin or rib portion positioned to reduce or eliminate swirl induced by the configuration of the intake manifold, particularly when used in a large engine having a left bank and a right bank of combustion chambers. By controlling swirl induced by the intake manifold, swirl consistency is improved between engine cylinders and between the left bank and the right bank, improving the consistency of power output and reducing emissions, particularly particulate emissions, also called smoke.
摘要:
An air intake structure is provided with an air intake control valve (20) disposed in the air intake passage (13). The air intake control valve (20) has a valve element (23) pivotally mounted at one end adjacent to a passage wall of the air intake passage (13). The air intake control valve (20) is configured to control a gas flow based on the rotational position of the valve element (23). A horizontal partitioning plate (25) extends along the flow direction of an intake air. The horizontal partitioning plate (25) can be stationary or moveable with the valve element (23). Optionally, the valve element (23) has a swirl-producing notch (23c) and a vertical partitioning plate (26) extends substantially perpendicular to the horizontal partitioning plate (25) from a position corresponding to a vertical side edge (23f) of the swirl-producing notch (23c) when the air intake control valve (20) is fully closed. The vertical partitioning plate (26) can be stationary or moveable with the valve element (23).
摘要:
A divider plate for two or more inlet ports provided in a cylinder head of an internal-combustion engine comprises divider portions that divides inside of the two or more inlet ports along an intake air flow, a side cast-in insert portion provided on at least one side portion located in a direction perpendicular to that of the intake air flow, that is enclosed by molten metal during casting of the cylinder head, an inner cast-in insert portion that is provided between the divider portions, that is enclosed by the molten metal during the casting of the cylinder head, and an inner accelerator formed in the inner cast-in insert portion, accelerates coagulation of the molten metal, wherein the inner accelerator has at least one of a plurality of holes, a concave portion, a convex portion, and a concave - convex portion, or a combination of a hole and a concave portion, a convex portion or a concave-convex portion.
摘要:
An internal combustion engine includes an intake port (5) leading to an engine cylinder (2). The intake port is divided into first and second passage section by a partition (11) extending in the intake port in a longitudinal direction of the intake port. A gas motion control valve (31) is arranged to open and close an upstream end of the second passage section (5B). A connection passage (12) connects an upstream end portion of the second passage section (5B) to the first passage section (5A). A fuel injector (41) is directed to inject fuel toward a valve opening of the intake valve through a space (5C) on the downstream side of the downstream end of the partition (11).
摘要:
An intake apparatus for an internal combustion engine, including a partition (11) dividing an intake port (5) into a first passage (5A) and a second passage (5B), and a gas motion control valve (31) including a rotatable valve element disposed upstream of the partition (11) and spaced from an upstream end (11b) thereof. The gas motion control valve (31) has a full-closed position where the valve element prevents intake air from flowing into the second passage (5B) and a full-open position where the valve element allows the intake air to flow into the second passage (5B). The valve element is inclined so as to guide a flow of the intake air to the first passage (5A) when the gas motion control valve (31) is in the full-closed position. The valve element and the partition cooperate with each other to define an interspace (12) therebetween when the gas motion control valve (31) is in the full-closed position.
摘要:
The invention relates to a control apparatus for a direct injection engine having an intake valve (6), an exhaust valve (7) and a fuel injection valve (8) for injecting fuel directly into a cylinder of the engine and in which fuel injection by the fuel injection valve (8) is performed during intake stroke or during compression stroke of the engine, has combustion stabilizing device (40) for stabilizing combustion in the cylinder (1). The combustion stabilizing device (40) has next operation mode determination device (50) for selecting either an operation mode of recovering the combustion stability by fuel injection during intake stroke or an operation mode of recovering the combustion stability by fuel injection during compression stroke when a deteriorated state of combustion is detected in fuel injection during compression stroke.
摘要:
Die direkteinspritzende Brennkraftmaschine ist mit wenigstens einem Einlasskanal (12) zur Luftbeaufschlagung eines zugeordneten Zylinders (10) versehen, wobei im Einlasskanal (12) wenigstens ein Einlassventil (13) und ein Einspritzventil (14) angeordnet sind. Hierbei ist vorgesehen, dass ein sich im Einlasskanal (12) erstreckendes Schaltelement (15) zur Einstellung des Durchströmungsquerschnitts des Einlasskanals (12) vorgesehen ist, wobei das Einspritzventil (14) das Schaltelement (15) durchsetzt.
摘要:
The invention relates to methods for producing a cylinder head of an internal combustion engine in a semi-permanent casting with sand cores (26) for forming corresponding gas exchange channels, especially for an automobile. A parting sheet (14) is provided in at least one gas exchange channel, said parting sheet (14) being placed or baked in the sand core (16) of the gas exchange channel to be supplied with the parting sheet (14). According to the invention, the parting sheet (14) used has side lugs (18).