| 摘要 |
<p>The invention concerns a fuel-injection system for an air-compression internal-combustion engine, which uses, in addition to the usual smoke characteristic area and torque-limitation characteristic curve, a characteristic area in which the correct amount of injected fuel for smokeless operation is stored as a function of engine rpm and theoretical injection start. A minimum-value selection stage feeds the quantity-adjustment mechanism with only one signal corresponding to the smallest quantity which can be derived for the operating point from the smoke characteristic area, the torque-limitation characteristic curve and the additional characteristic area. This avoids the development of the smoke which is usually observed owing to late response of the injection timing control when the load cycle changes rapidly.</p> |
