What is the difference between the speed characteristics of diesel engine and gasoline engine?

① The torque curve of diesel engine under various load speed characteristics is relatively flat (the smaller the curvature radius of the torque curve of gasoline engine speed characteristics, the smaller the throttle opening, the lower the torque peak moves to, and the greater the slope changes with the speed. )。 (2) The maximum point of the external characteristic line of gasoline engine's effective power is generally at the calibrated power point; The maximum speed that diesel engine can achieve is very high, but the calibration point is much lower than it. (3) The fuel consumption curve of diesel engine is relatively flat under the speed characteristics of various loads, and only inclines to both ends, so the speed range of the most economic zone is very wide; Gasoline engines are different. The warpage of fuel consumption curve increases with the decrease of throttle opening, and the corresponding speed range of the most economical zone becomes narrower and narrower.