| 摘要 |
The object of the invention is to reduce the cost for the metered addition of water to fuel-air mixtures of four-stroke spark ignition engines and to increase the functional reliability of the metering. A metering device is to be created for the metered addition of water to fuel-air mixtures regardless of their quantity, which ensures an approximately constant quantity of water at minimal cost and a high reliability. According to the invention this is achieved by arranging a capillary tube, slanted in the direction of flow, downstream of the throttle valve of the carburettor, at right angles to the direction of flow, the said capillary tube being connected both to a capillary tube as flow limiter as part of the feed line to the water storage vessel and to a capillary tube as equalising line, which ends directly upstream of the throttle valve in the wall of the intake line. The invention can be used in all four-stroke spark ignition engines which are operated with external mixture formation. |
