| 摘要 |
The invention concerns an ignition device for internal combustion engine, containing: a main chamber ( 1 ) designed for including a main combustible mixture, and fitted with a compression system of said mixture, and an igniter ( 11 ) containing a precombustion chamber ( 2 ) designed for receiving reactants and an ignition system ( 13,14 ) of the reactants contained in the precombustion chamber ( 2 ), said precombustion chamber ( 2 ) being defined by a precombustion chamber body ( 12 ) having a head ( 12 a) including at least one passageway ( 15 ), said head ( 12 a) of the precombustion chamber body separating the precombustion chamber ( 2 ) from the main chamber ( 1 ) and communicating the precombustion chamber ( 2 ) and the main chamber ( 1 ) by dint of the passageway(s) ( 15 ), characterised in that the head ( 12 a) is coated at least partially externally with a coating layer (R) of at least one refractory material.
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