Gasoline engine electric-starting flywheel

Abstract

The invention discloses an electric starter flywheel of a gasoline engine, which comprises a flywheel disc, inner and outer magnetic steel fixed on the flywheel disc and a balance weight. Start the flywheel of the driven teeth. The driven teeth are located on the folded edge of the ring flywheel that is turned and extended from the mouth of the cavity of the flywheel. The folded edge and the flywheel are integrally structured. It not only reduces the weight of the flywheel, but also reduces the rotational inertia of the flywheel, and can completely stop the rotation within 3 seconds when braking. It can also ensure the stability and reliability of the torque transmitted by the driven gear of the electric starter, and prolong the service life of the flywheel. .

Description

technical field [0001] The invention relates to a starting flywheel of an engine, in particular to an electric starting flywheel of a gasoline engine. Background technique [0002] The starting flywheel of the gasoline engine is usually installed at one end of the crankshaft, and has the functions of starting the engine ignition and inertia reset. The outer circumference of the flywheel disc of the existing electric starter flywheel needs an interference fit with a driven gear. The driven gear meshes with the gear on the starter motor shaft, and the power of the starter motor drives the flywheel disc to rotate, thereby driving the crankshaft to start. engine. Referring to Fig. 6, the flywheel disc 20 of the electric starter flywheel of the existing gasoline engine is generally a cast iron product, and the wall thickness of the flywheel disc must be more than 10mm to ensure its strength and rigidity, so that it can form with the driven gear 21 Strong interference fit, when ...

AI Technical Summary

Problems solved by technology

However, the flywheel disc made of cast iron needs to ensure strength and rigidity, resulting in heavy weight, large rotational inertia, long braking time, and cannot be completely stopped within 3 seconds, so it cannot be used for machinery such as lawnmowers. The braking of a small engine must be stopped within 3 seconds, and the flywheel of this cast iron structure still has a large machining allowance, poor heat dissipation, low production efficiency, processing and polluting the environment, etc., and its weak parts are easy to Crack, making the flywheel useless

In order to reduce the weight of the flywheel and reduce its inertia, some flywheels are made of aluminum alloy casting, but the strength of the flywheel made of aluminum alloy is low, its key parts are easy to wear, and there is a problem of short service life, especially the aluminum alloy material. The cost is high, which increases the burden on enterprises or users

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