JPS5980547A - Flywheel for engine - Google Patents

Abstract

PURPOSE:To make a flywheel mass alterable according to an engine speed, by installing a device which attracts an auxiliary flywheel being attached slidably and rotatably at will to an engine output shaft, to a flywheel in accordance with the number of revolutions. CONSTITUTION:Energizing an electromagnet 24 with a continuous rating current in time of engine's low speed rotation, when an auxiliary flywheel body 20 is attracted to a flywheel body 16, mass in a flywheel 10 grows large equivalently with the sum total of mass in both these flywheel bodies 20 and 16, so that rotational irregularities are in no case produced there, and when the auxiliary flywheel body 20 is separated from the flywheel body 16 after unenergizing the electromagnet 24 in time of speed adjustment, the mass of the flywheel 10 comes small equivalently only to the mass of the flywheel body 16 whereby no adverse effect is given to its adjustable speed characteristic. Moreover, in time of rotation at high speed, since it is no necessary to make the mass large, there is no requirement to energize the electromagnet 24. Therefore, the engine can be brought into a state of optimum driving.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a modified jL engine flywheel.

In general, an engine flywheel consists of a flywheel with a constant mass attached to the output shaft of the engine, and therefore rotational inertia based on the constant mass is always generated regardless of the rotational speed of the engine. On the other hand, when the engine rotates at low speed, the mass of the flywheel is required to be large, but when the engine accelerates, decelerates, or rotates at high speed, the mass of the flywheel is required to be small.

Therefore, if the mass of the flywheel is too small, uneven rotation will occur when the engine rotates at low speed, and if the mass of the flywheel is too thick, the engine will not be able to accelerate or decelerate smoothly.

An object of the present invention is to provide an engine flywheel whose mass can be changed depending on the rotation of the engine.

A detailed description of the non-inventive embodiments with reference to the drawings is as follows.
2 and 2 show a flywheel 10 for an engine according to the invention, which includes a flywheel main body 16 attached to an output shaft 12 of an engine (not shown) by screws 14, and a slider attached to the output shaft 12. It is provided with an annular auxiliary flywheel that is rotatably supported by a movably provided bearing 18.

Adsorption means ρ is provided on the surface of the flywheel main body 16 facing the non-operating side of the auxiliary flywheel. It is controlled by a control device such as a microcomputer that supplies power according to the amount of power.

Note that this power supply is performed via a slip ring.

Therefore, when rotating at low speed, when the electromagnet 24 is energized and the auxiliary flywheel non-working side is attracted to the flywheel non-working side 16 as shown in FIG. 2, 'Xi of the flywheel 10 becomes the sum of the masses of both flywheel non-working Since the rotation becomes larger, uneven rotation does not occur, and when the electromagnetic waste is de-energized during acceleration and deceleration and the auxiliary flywheel main body is separated from the flywheel 16 as shown in FIG. The mass is the flywheel body 16
Since the mass is reduced and the acceleration/deceleration characteristics are not adversely affected. It should be noted that when rotating at cylinder speed, there is no need to increase the mass, so there is no need to energize the electromagnet.

According to the present invention, as described above, since the IJL amount of the flywheel is varied according to the rotation of the engine, the engine can be brought into an optimal operating state.

[Brief explanation of drawings]

The drawing is a partial cross-sectional side view of the flywheel of the engine according to the invention. 1o----Flywheel, 12--1--Output shaft, 16-----Lywheel disembodied, 18-----One bearing, Addition----m-Auxiliary flywheel uninterrupted, 22 ---
--One layer means. Patent Applicant Hino Motors Co., Ltd. Procedure Amendment (Method) 1. Indication of the case Japanese Patent Application No. 191434 No. 191434 2, the name of the invention is the engine river flywheel 3 - the case of the person who carried out the supplementary jump) Patent applicant Higashizaruto Hino City day! 1! Ydai 3-chome 1-shochi 1sho*u 58
February 228 + Dispatch H15, details subject to amendment * (1) ' r Drawing simplification 7i: Rust, Mei 1 I 1 (:・IG, Supplement 1 Er/J Uchihiragi I detailed oath, page 4 Rin 6 Trace down *r: t/) and stop at -11, which is one drawing μ in the row. "Figures 1 and 9 are different operating states of the Niasin flywheel according to the present invention."
'C is there. 1 or more 1

Claims (1)

[Claims] An engine flywheel comprising a flywheel body attached to the output shaft of the engine, including an auxiliary flywheel body slidably and rotatably attached to the output shaft in close proximity to the flywheel body; A flywheel for an engine, comprising a suction means that constantly suctions the auxiliary flywheel main body according to the rotation of the flywheel.