JPH08156508A - Structure of accelerator with flywheel for automobile - Google Patents
Structure of accelerator with flywheel for automobileInfo
- Publication number
- JPH08156508A JPH08156508A JP6303297A JP30329794A JPH08156508A JP H08156508 A JPH08156508 A JP H08156508A JP 6303297 A JP6303297 A JP 6303297A JP 30329794 A JP30329794 A JP 30329794A JP H08156508 A JPH08156508 A JP H08156508A
- Authority
- JP
- Japan
- Prior art keywords
- shaft
- flywheel
- reduce
- drive vehicle
- automobile
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
Landscapes
- Motor Power Transmission Devices (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、自動車のフライホイー
ル付アクスルの構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the structure of an axle with a flywheel for an automobile.
【０００２】[0002]
【従来の技術】車両の総重量規制緩和の影響で、トラッ
クのエンジントルクは大きくなっている。更に、ブレー
キ性能向上のため、変速機、アクスルも大きくなってい
る。これらユニットの変化に伴い、各ユニットを連結し
て動力を伝達するプロペラシャフトは、衝撃強度及び耐
久強度的には性能を満足しても、ねじり剛性値が大幅に
足りないバランスとなっている。したがって、駆動系の
ねじり共振現象により高速走行時に室内こもり音が発生
し易い。2. Description of the Related Art Due to the effect of deregulation of the total weight of vehicles, the engine torque of trucks is increasing. Furthermore, in order to improve braking performance, transmissions and axles are also becoming larger. With changes in these units, the propeller shaft that connects the units and transmits power has a balance in which the torsional rigidity value is significantly insufficient, even if the performance is satisfied in terms of impact strength and durability strength. Therefore, due to the torsional resonance phenomenon of the drive system, indoor muffled noise is likely to occur during high-speed traveling.
【０００３】[0003]
【発明が解決しようとする課題】この室内こもり音に対
し従来は、プロペラシャフトの大巾なサイズアップ、フ
レームの補強追加、キャブマウントブラケット部の振動
伝達率の低減等の対策が採られている。しかし、これら
の対策は、高価で重量増となり、また、開発期間を要す
るものであった。To cope with this indoor muffled noise, measures have conventionally been taken such as a large size increase of the propeller shaft, additional reinforcement of the frame, and reduction of the vibration transmissibility of the cab mount bracket. . However, these measures are expensive, increase in weight, and require a development period.
【０００４】本発明は、室内こもり音を低減する自動車
のフライホイール付アクスルの構造を提供することを目
的としている。An object of the present invention is to provide a structure of an axle with a flywheel of an automobile, which reduces the muffled noise in a room.
【０００５】[0005]
【知見】本発明者等は種々研究の結果、後軸２軸駆動車
においては、後前軸と後後軸との間で図２に示すよう
に、室内こもり音Ａの最大値Ａ１が発生し、室内こもり
音が不快になるレベルＣを上回ることを見出した。した
がって、後前軸と後後軸との間にフライホイールを設け
れば、剛性についてのバランスがとれた状態が達成さ
れ、ねじり振幅が減少する。また、共振周波数が共振周
波数Ｂのように下がって従来の高速域から低速域に移
り、不快になるレベルＣを下回る。本発明は、この知見
にもとづいてなされたものである。[Observation] As a result of various studies, the inventors of the present invention have shown that a maximum value A1 of the indoor muffled sound A is generated between the rear front axle and the rear rear axle in the rear axle two-axis drive vehicle as shown in FIG. However, it was found that the muffled sound in the room exceeded the level C at which the sound became uncomfortable. Therefore, if a flywheel is provided between the rear front shaft and the rear rear shaft, the rigidity is balanced and the torsional amplitude is reduced. Further, the resonance frequency decreases like the resonance frequency B and shifts from the conventional high speed range to the low speed range, and falls below the uncomfortable level C. The present invention has been made based on this finding.
【０００６】[0006]
【課題を解決するための手段】本発明にはれば、後輪２
軸駆動車の後前軸と後後軸との間に、ピニオン軸と同軸
上にフライホイールを取付けている。According to the present invention, the rear wheel 2
A flywheel is mounted coaxially with the pinion shaft between the rear front shaft and the rear rear shaft of the shaft drive vehicle.
【０００７】[0007]
【作用】上記のように構成された自動車のフライホイー
ル付アクスルにおいては、フライホイールにより駆動系
の慣性モーメントが増加するため、駆動系が持つねじり
振動の共振周波数が低下し、ねじり振動の振幅も低減
し、車軸のプロペラシャフト回りのピッチングが下が
る。その結果、室内こもり音が低減される。In the axle with a flywheel of an automobile constructed as described above, the flywheel increases the moment of inertia of the drive system, which lowers the resonance frequency of the torsional vibration of the drive system and also the amplitude of the torsional vibration. It reduces the pitching of the axle around the propeller shaft. As a result, indoor muffled noise is reduced.
【０００８】[0008]
【実施例】以下図面を参照して本発明の実施例を説明す
る。Embodiments of the present invention will be described below with reference to the drawings.
【０００９】図１において、後輪２軸駆動車の後前軸１
には、前後端にユニバーサルジョイント３、４を備えた
全体を符号２で示すプロペラシャフトを介して後後軸５
が連結されている。そして、後後軸５の図示しないピニ
オン軸に固設されたコンパニオンフランジ６とユニバー
サルジョイント４との間には、フライホイール７が図示
しない複数のボルトにより介装されている。In FIG. 1, the rear front shaft 1 of a rear-wheel two-axis drive vehicle
The rear rear shaft 5 is provided with a universal joint 3 and 4 at the front and rear ends via a propeller shaft indicated by reference numeral 2.
Are connected. A flywheel 7 is interposed between a companion flange 6 fixed to a pinion shaft (not shown) of the rear rear shaft 5 and the universal joint 4 by a plurality of bolts (not shown).
【００１０】次に作用を説明する。フライホイール７に
より後前軸１、プロペラシャフト２及び後後軸５からな
る駆動系の慣性モーメントが増加するため、駆動系が持
つねじり振動の共振周波数が低下して従来の高速域から
低速域に移ると共に、ねじり振幅も低減する。したがっ
て、図２に示す室内こもり音Ｂの最大値Ｂ１は、不快に
なるレベルＣを下回り効果的である。Next, the operation will be described. Since the flywheel 7 increases the moment of inertia of the drive system including the rear front shaft 1, the propeller shaft 2, and the rear rear shaft 5, the resonance frequency of the torsional vibration of the drive system is lowered, and the conventional high speed range is changed to the low speed range. As it moves, the torsional amplitude also decreases. Therefore, the maximum value B1 of the indoor muffled sound B shown in FIG. 2 is effective below the uncomfortable level C.
【００１１】[0011]
【発明の効果】本発明は、以上説明したように構成さ
れ、各種エンジンで変速機、アクスル等の組合せにおい
て、最適なチューニングサイズのフライホイールを選択
できるので、 （１） 効率良く室内こもり音を低減することができ
る。 （２） 開発期間が短縮できる。 （３） 重量増を最小限にとどめることができる（フレ
ーム剛性で対応すると、数１０ｋｇオーダーの重量増と
なる）。 （４） 安価に提供することができる。 （５） 後後軸のタイヤとタイヤとの間に位置し、干渉
問題がない。EFFECTS OF THE INVENTION The present invention is configured as described above, and a flywheel having an optimum tuning size can be selected in a combination of transmissions, axles, etc. in various engines. (1) Efficient indoor muffled noise It can be reduced. (2) The development period can be shortened. (3) The weight increase can be minimized (if the frame rigidity is dealt with, the weight increase will be of the order of several tens of kilograms). (4) It can be provided at low cost. (5) The rear-rear axle is located between the tires and there is no interference problem.
【図１】本発明の一実施例を示す側面図。FIG. 1 is a side view showing an embodiment of the present invention.
【図２】本発明の効果を説明する音レベル・回転数特性
図。FIG. 2 is a sound level / rotational speed characteristic diagram for explaining the effect of the present invention.
１・・・後前軸 ２・・・プロペラシャフト ３、４・・・ユニバーサルジョイント ５・・・後後軸 ６・・・コンパニオンフランジ ７・・・フライホイール 1 ... Rear front shaft 2 ... Propeller shaft 3, 4 ... Universal joint 5 ... Rear rear shaft 6 ... Companion flange 7 ... Flywheel
Claims (1)
に、ピニオン軸と同軸上にフライホイールを取付けたこ
とを特徴とする自動車のフライホイール付アクスルの構
造。1. A structure of an axle with a flywheel for an automobile, characterized in that a flywheel is mounted coaxially with a pinion shaft between a rear front shaft and a rear rear shaft of a rear-wheel two-axis drive vehicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30329794A JP3512124B2 (en) | 1994-12-07 | 1994-12-07 | Axle structure with flywheel for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30329794A JP3512124B2 (en) | 1994-12-07 | 1994-12-07 | Axle structure with flywheel for automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08156508A true JPH08156508A (en) | 1996-06-18 |
| JP3512124B2 JP3512124B2 (en) | 2004-03-29 |
Family
ID=17919264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30329794A Expired - Lifetime JP3512124B2 (en) | 1994-12-07 | 1994-12-07 | Axle structure with flywheel for automobile |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3512124B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140278016A1 (en) * | 2013-03-15 | 2014-09-18 | Dana Heavy Vehicle Systems Group, Llc | Engine torque spike cancellation device |
| US10125681B2 (en) | 2013-03-12 | 2018-11-13 | Dana Limited | Torque ripple compensating device |
-
1994
- 1994-12-07 JP JP30329794A patent/JP3512124B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10125681B2 (en) | 2013-03-12 | 2018-11-13 | Dana Limited | Torque ripple compensating device |
| US20140278016A1 (en) * | 2013-03-15 | 2014-09-18 | Dana Heavy Vehicle Systems Group, Llc | Engine torque spike cancellation device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3512124B2 (en) | 2004-03-29 |
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