JP2000266127A - Aluminum made flywheel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a flywheel for an internal combustion engine furnished with abrasion resistance and performance in a degree to be durable for use in heat resistance and strength and capable of lightening itself to acquire quick reaction. SOLUTION: This flywheel is constituted by integrally forming a flywheel main body 1 for an internal combustion engine and a starting ring gear part 3 to be formed on its outer peripheral part of a reinforcing aluminum material furnished with high abrasion resistance, heat resistance and high strength or a surface treated reinforcing aluminum material, accumulating a disc type clutch contact plate 4 of an abrasion resistant material on a clutch contact surface 2 provided on one surface of the flywheel main body 1, providing a plural number of bolt holes 5 through which the flywheel main body 1 and the clutch contact plate 4 are passed as they are with intervals, inserting fixing bolts 6 in the bolt holes 5 and fixing both of them free to connect and disconnect to and from each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a flywheel used for an internal combustion engine such as an automobile.

[0002]

2. Description of the Related Art The function of a flywheel is originally considered to be high in mass in order to increase the rotational inertia, and the moment of inertia is increased by biasing the mass toward the outer periphery to form a thick wall. ing. In addition, the starting ring gear portion provided on the outer peripheral portion also has a large abrasion due to meshing, and is required to have abrasion resistance. For this reason, as shown in FIG. 2, an integrally formed cast iron A is usually used for a flywheel for an internal combustion engine such as an automobile. Further, the clutch contact surface integrally formed on one surface of the flywheel generates frictional heat and is severely worn, and is required to have heat resistance and wear resistance capable of withstanding the heat. For this reason, there is also provided a part in which a disk made of a heat-resistant and wear-resistant material can be detachably fixed.

[0003] In recent years, in sports cars, the weight of the flywheel has to be reduced rather than gaining high inertia, because the resistance to high-speed rotation is small and the response is quick.
It is thought that it will improve the countermeasures against "run-down" and improve the "fuel efficiency", and personal modifications of users are being made with the aim of improving the performance. However, various lightweight metals such as aluminum used for weight reduction have disadvantages in abrasion resistance, heat resistance, strength, etc., and are susceptible to "cracking" and "distortion" due to high heat, and easily required by users. Could not be satisfied.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and has a performance such as abrasion resistance, heat resistance and strength enough to withstand use, and is lightweight to obtain a quick reaction. The present invention provides a flywheel for an internal combustion engine, which is capable of performing the following.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a flywheel body 1 for an internal combustion engine and a starting ring gear portion 3 formed on the outer periphery thereof with high wear resistance and heat resistance. And a disk-shaped clutch contact plate 4 made of a wear-resistant material on a clutch contact surface 2 provided on one surface of the flywheel body 1 and formed of a reinforced aluminum material having high strength or a surface-treated reinforced aluminum material. Superimpose,
Aluminum formed by providing bolt holes 5 penetrating the flywheel body 1 and the clutch contact plate 4 as they are at a plurality of intervals, inserting fixing bolts 6 into the bolt holes 5, and removably fixing the two. Made flywheel.

In the above structure, the surface treatment of the surface-treated reinforced aluminum material is performed by one of an alumite treatment method, a hard alumite treatment method, and a coating method.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. According to the present invention, as shown in FIGS. 2A and 2B, a flywheel body 1 for an internal combustion engine and a starting ring gear portion 3 formed on an outer peripheral portion thereof have a high wear resistance.
Either integrally formed of a heat-resistant and high-strength reinforced aluminum material or assembling divided parts. As the reinforced aluminum material, a material currently used for an aircraft, a space rocket, or the like is used.

A disc-shaped clutch contact plate 4 made of a heat-resistant and wear-resistant material is superimposed on a clutch contact surface 2 provided on one surface of the flywheel body 1, and the flywheel body 1 and the clutch A plurality of bolt holes 5 penetrating the contact plate 4 are provided at a plurality of intervals, a fixing bolt 6 is inserted into the bolt holes 5 and fixed with a nut 7, and both are removably fixed. As the heat-resistant and abrasion-resistant material, materials such as non-ferrous metals, castings, ceramics, and carbon can be used, and those manufactured by forming them on the clutch contact plate 4 can be used.

The reinforced aluminum material used has a disadvantage that it is easily corroded. Therefore, in order to prolong the service life, it is preferable to use a surface-treated reinforced aluminum material. Although there are various surface treatment methods, those treated by alumite treatment method, hard alumite treatment method, coating method, etc. are effective, especially those treated with hard alumite have excellent corrosion resistance and wear resistance. Starting ring gear part 3
It is the most suitable because it is also a measure to prevent the wear of steel.

[0010]

According to the present invention, as described above, in a flywheel for an internal combustion engine, by using reinforced aluminum for the flywheel body 1 and its starting ring gear portion 3, it is possible to use abrasion resistance, heat resistance and strength. It has achieved performance that can withstand the weight and achieved weight reduction. Therefore, the resistance becomes less until the flywheel rotates at high speed,
Quick reaction of the flywheel became possible. And
The cost is higher than that of cast iron, but the effect is significant.

The clutch contact surface 2 provided on one side of the flywheel body 1 is partially provided with a clutch contact plate 4 made of a material having excellent wear resistance, heat resistance and strength. The life of the flywheel body 1 can be extended.

[Brief description of the drawings]

FIG. 1A is a front view of the present invention, and FIG.

FIG. 2 is a conventional longitudinal side view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Flywheel main body 2 Clutch contact surface 3 Start ring gear part 4 Clutch contact plate 5 Bolt hole 6 Fixing bolt 7 Nut

Claims (2)

[Claims] A flywheel body for an internal combustion engine (1)
And a starting ring gear portion formed on the outer periphery thereof (3)
Is formed of a reinforced aluminum material having high abrasion resistance, heat resistance and high strength or a reinforced aluminum material subjected to a surface treatment, and a clutch contact surface (2) provided on one surface of the flywheel body (1) has a A disk-shaped clutch contact plate (4) made of an abradable material is superimposed, and bolt holes (5) penetrating the flywheel body (1) and the clutch contact plate (4) are arranged at a plurality of intervals. Bolt holes provided (5)
An aluminum flywheel made by inserting the fixing bolts (6) into the case and fixing them removably. 2. The aluminum flywheel according to claim 1, wherein the surface treated reinforced aluminum material is one of an alumite treatment method, a hard alumite treatment method, and a coating method.