The role of the flywheel
The flywheel has a large moment of inertia. Since the work of each cylinder of the engine is discontinuous, the engine speed also changes. When the engine speed increases, the kinetic energy of the flywheel increases, and the energy is stored. When the engine speed decreases, the kinetic energy of the flywheel decreases, releasing energy. Flywheels can be used to reduce speed fluctuations during engine operation.
Installed at the rear end of the engine crankshaft, it has rotational inertia. Its function is to store the engine energy, overcome the resistance of other components, and make the crankshaft rotate evenly. Connect the engine and the car drive through the clutch mounted on the flywheel; The machine is engaged to facilitate engine starting. And it is the integration of crankshaft position sensing and vehicle speed sensing.
In the power stroke, the energy transmitted by the engine to the crankshaft, in addition to the external output, is partially absorbed by the flywheel, so that the rotational speed of the crankshaft does not increase much. In the three strokes of exhaust, intake and compression, the flywheel discharges its stored energy to compensate for the work consumed by these three strokes, so that the crankshaft speed is not reduced too much.
In addition, the flywheel has the following functions: the flywheel is the active part of the friction clutch; the flywheel rim is embedded with the flywheel ring gear for starting the engine; the top wheel is also engraved with the top dead center mark for calibration Ignition timing or injection timing, as well as adjusting the valve clearance.