许多驾驶员在冷车起动前,总是习惯先踩几脚“空油”(即快速连续地踩踏节气门踏板几下),然后再接通起动开关。他们认为这样做能提高起动的成功率,但笔者认为这样做未必都能达到预期目的。 化油器式汽油发动机在冷起动过程中,由于发动机在外力驱动下起动转速极低(大约只有100转/分钟左右),因此化油器中的空气流速非常低,不能使汽油得到良好的雾化,其大部分将呈较大的油粒状态,特别是在冷机起动时这种油粒附在进气管壁上,不能及时随气流进入气缸内,从而使气缸内混 Many drivers are accustomed to taking a few feet of “empty oil” (ie, pressing the throttle pedal a few times in quick succession) before starting the cold-crank, before turning the start-up switch on. They think this can improve the success rate of starting, but I think this may not be able to achieve the desired purpose. Carburetor Gasoline Engine Cold start, the engine driven by external force to start very low speed (only about 100 rev / min or so), so carburetor air flow rate is very low, can not get good gasoline gasoline fog Most of them will be larger oil particles state, especially in cold start when the oil particles attached to the intake pipe wall, can not be timely with the air into the cylinder, so that the cylinder mixed