| 摘要 |
<p>Injector cleaning/testing apparatus is arranged to enable electrically actuated injectors to be cleaned and tested whilst in situ on an engine. The apparatus is connected to the fuel supply system (12, 13, 15) of the engine which feeds fuel and/or cleaning fluid to the engine injectors (11). Measuring means (5) is also provided for measuring the rate of flow of fuel through the injectors (11). Fuel is pumped to pressurise the supply of fuel to the injectors; the pressure is measured and the rate of change of the pressure is determined as an injector is opened thereby determining the rate of flow through the injector. The apparatus also includes an arrangement whereby the engine fuel supply pump (13) is used during cleaning and an arrangement (42-48) by which the injectors (11) may be actuated in different modes without disconnection.</p> |
