| 摘要 |
A fuel injection apparatus for mixture-compressing, externally ignited internal combustion engines with continuous injection into the air induction line adapted to apportion a quantity of fuel proportional to the quantity of induced air and to accomplish good preparation of the fuel-air mixture. The fuel injection apparatus comprises an air flow rate meter arranged in the air induction tube, which moves in accordance with the quantity of air flowing through it against a return force and thereby actuates a fuel apportionment valve. Accordingly, the apportioned fuel flows into a fuel feed line downstream from the fuel apportionment point, which fuel feed line empties on the one side into the air induction line and is connected on the other with a source of air. The pressure differential at the fuel apportionment point is capable of being maintained constant by means of a differential pressure valve, whose movable valve part is acted upon on the one side by the fuel pressure upstream of the fuel apportionment point and on the other side by air pressure in the fuel feed line at the fuel apportionment point. In order to enrich the fuel-air mixture during acceleration, the pressure in the fuel feed line can be expeditiously increased, so that a sufficient pressure differential is available for the injection of the fuel-air mixture at the opening of the fuel feed line into the air induction line. |
