Combustion pre-chamber device for an internal combustion engine
First Claim
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1. An apparatus, comprising:
- a combustion pre-chamber device for engaging a cylinder head of an internal combustion engine, the combustion pre-chamber device including a body with an outer surface extending between a first end and an opposite second end of the body, the first end of the body including an opening to an inner passage defined by the body for receiving a spark plug, the second end of the body defining a combustion pre-chamber and at least one through-hole in communication with the combustion pre-chamber that opens at the outer surface, the body further including at least one bore extending from an opening at the outer surface into the body to a closed end of the at least one bore that is located within the body of the combustion pre-chamber device.
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Abstract
A combustion pre-chamber device for a spark ignition internal combustion engine is configured to engage a spark plug and be mounted to a cylinder head in communication with a combustion chamber of a cylinder of the engine. The combustion pre-chamber device includes a number of bores that open at an outer surface thereof that extend into the body and receive a coolant flow to provide cooling for a combustion pre-chamber of the combustion pre-chamber device.
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Citations
20 Claims
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1. An apparatus, comprising:
a combustion pre-chamber device for engaging a cylinder head of an internal combustion engine, the combustion pre-chamber device including a body with an outer surface extending between a first end and an opposite second end of the body, the first end of the body including an opening to an inner passage defined by the body for receiving a spark plug, the second end of the body defining a combustion pre-chamber and at least one through-hole in communication with the combustion pre-chamber that opens at the outer surface, the body further including at least one bore extending from an opening at the outer surface into the body to a closed end of the at least one bore that is located within the body of the combustion pre-chamber device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An apparatus, comprising:
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a body including a first end defining an inner passage along a first inner surface of the body at the first end, the inner passage including threads operable to receive a plurality of complementary spark plug threads defined by a spark plug; and the body including a second end opposite the first end positionable into a combustion chamber of a cylinder, the second end defining a combustion pre-chamber along a second inner surface of the body and a plurality of second end threads along an outer surface of the second end operable to couple to a plurality of complementary cylinder head threads defined by the cylinder head, wherein the second end includes at least one through-hole operable to fluidly couple the combustion pre-chamber and the combustion chamber of the cylinder, and the body includes at least one first bore and at least one second bore that intersects the at least one first bore, the at least one first and second bores each extend into the body from an opening at the outer surface to a blind end thereof that is located within the body. - View Dependent Claims (14, 15, 16)
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17. A system comprising:
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an internal combustion engine including a cylinder defining a combustion chamber; a cylinder head engaged to the internal combustion engine, the cylinder head including a spark plug passage and a head cooling passage; and a combustion pre-chamber device positioned in the spark plug passage and coupled to the cylinder head, the combustion pre-chamber device including a first end and a second end and having an inner surface and an outer surface, the inner surface defining a combustion pre-chamber in fluid communication with the combustion chamber, the outer surface defining a cooling channel about the combustion pre-chamber device for receiving a coolant flow from the head cooling passage, the combustion pre-chamber device further including at least one bore opening at the cooling channel, the at least one bore extending to a blind end location within the combustion pre-chamber device, the at least one bore receiving the coolant flow to provide cooling of the combustion pre-chamber. - View Dependent Claims (18, 19, 20)
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Specification