| 摘要 |
A device for supplying water vapour to an internal combustion engine having at least one combustion chamber, means for supplying fuel and air to the chamber, including an air inlet provided with an air cleaner element (13), and an exhaust system to exhaust combustion gases from the chamber, which device comprises a water boiler (1) for placing in heat-exchange relation with the exhaust system, means (4, 5, 17, 19) for automatically maintaining a predetermined water level in the boiler, a pipe (10) for connecting space above the water level to the air intake of the engine downstream of the air cleaner element (13) (but upstream of a butterfly valve if any), and a scavenging hole (14) for connecting said space to the atmosphere, the arrangement being such that in use water in the boiler (1) is boiled by the heat transferred from the exhaust system (2) and wet steam passes along the pipe (10) to join the air entering the air intake, said water-level maintaining means having provision for ensuring that an adequate sypply of wet steam enters the air intake, under various conditions of use. |
