| 摘要 |
<p>PURPOSE:To display the effect of the improvement of fuel cost and engine output, by controlling a temperature regulation means so that the temperature of glow plugs may be lowered at an engine more than middle load operation, in accordance with a catalytic temperature and pressure within a combustion chamber. CONSTITUTION:At the operation sphere of an engine 1 more than middle load opera tion, pressure P within a combustion chamber 6 is detected by means of a pressure sensor 9, and the combustion change of mixed air caused by the lowering control of the temperature of glow plugs 8... is detected by means of the catalytic temperature Tc of a catalyst device 14, as the pressure P is being restrained so that it may become at the range of pressure which is less than allowable pressure, and the temperature of glow plugs 8... is conducted with lowering control as much as possible so that the temperature Tc may be contained to a temperature which is less than an allowable one. As a result, a mixed air ignition lag time becomes as much longer, and a situation in which the spray of fuel injected from a combustion injection valve 7 is uniformly distributed within the combustion chamber 6, is realized, and pre-mixed combustion is increased, so the rate of air utilization at the time of the combustion of mixed air becomes larger, and torque generated at the engine 1 becomes larger, and at the same time the cost of fuel is improved.</p> |
