Multiple tension reducing sprockets in a chain and sprocket system

一种链轮、张力的技术，应用在皮带/链条/齿轮、带有齿的元件、卷扬装置等方向

Active Publication Date: 2010-12-15
BORGWARNER INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] Again, without intending to be bound by any theory, the vibrations of these systems at the lower resonance modes tend to be in the same direction

Method used

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  • Multiple tension reducing sprockets in a chain and sprocket system
  • Multiple tension reducing sprockets in a chain and sprocket system
  • Multiple tension reducing sprockets in a chain and sprocket system

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0115] Example 1 - How sprocket positioning affects the performance of two tension reducing sprockets on the first mode.

[0116] Figure 7 A system 200 is shown with two third order tension reducing sprockets 202 and 204 (one on each camshaft) to cancel a first mode resonance. There is no externally attached tension. Two other sprockets in the system include sprocket 206 and drive sprocket 208 . A chain having segment 210 runs between tension reducing exhaust sprocket 202 and drive sprocket 208 . Chain segment 212 , or segment 4 , runs between drive sprocket 208 and sprocket 206 . Segment 214 , or segment 3 , runs between sprocket 206 and tension reducing chain 204 . Segment 216 , or segment 2 , runs between tension reducing sprocket 204 (representing intake air) and tension reducing sprocket 202 .

[0117] exist Figure 7 The initial orientation shown in has a maximum radius at the center of the chain wrapped around the two sprockets as seen at 218 and 220 . Rotating ...

example 2

[0120] Example 2 - A system with a large second mode resonance at high speed

[0121] Figure 8 A four sprocket system 300 is shown having two reducing sprockets driven by a drive sprocket 308 and a sprocket 306 between the two tension reducing sprockets 302 and 304 on shafts 1 and 3 respectively. Tension of sprockets 302 and 304 . Chain segment 310 , or segment 1 , runs between tension reducing sprocket 302 and drive sprocket 308 on axle 0 . Chain segment 312 runs between drive sprocket 308 and tension reducing sprocket 304 . Segment 314 , or segment 3 runs between tension reducing sprocket 304 and sprocket 306 on shaft 2 , and segment 316 or segment 2 runs between sprocket 306 and tension reducing sprocket 302 . Figure 8a shows that if all of these sprockets are regular sprockets at Figure 8 These tensions are generated in system 300 . Figure 8 A shows that if the Figure 8 All of these sprockets in the system shown in are regular sprockets. When such a regular spro...

example 3

[0127] Example 3 - Tension reduction in a V8 chain driving two rows of engines

[0128] Figure 13 A seven sprocket system is shown in which drive sprocket 402 on shaft 0 is connected to sprocket 404 on shaft 1 by chain segment 1 (416) and chain segment 2 (418). Sprocket 404 on shaft 1 is connected to sprocket 414 on shaft 6 by chain segment 3 (420) and sprocket 406 on shaft 2 is connected to the chain by chain segment 9 (432) and chain segment 8 (430). On wheel 414. Sprocket 406 on shaft 2 is connected to sprocket 408 on shaft 3 by chain segment 4 (422). Sprocket 408 is connected to sprocket 410 on shaft 4 by chain segment 5 (424). Sprocket 410 is connected to sprocket 412 on shaft 5 by chain segment 6 (426). Finally, sprocket 412 is connected to sprocket 404 by chain segment 7 (428). Figure 13a , Figure 13b as well as Figure 13c Tensions on chain segments 1 , 2 and 3 in the first and second resonance modes, respectively, are shown when all of the sprockets are regu...

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PUM

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Abstract

In chain and sprocket systems with at least two resonance modes, two or more tension reducing sprockets are oriented to cancel each other at a first resonance mode and have no effect to increase tensions at such first resonance mode. The tension reduction sprockets, however, are oriented with each other so that tensions will be reduced at a second resonance mode. Hence, two or more tension reducing sprockets are used to reduce tensions at a second resonance mode from sources outside the chain and sprocket system while minimizing tension increases at first resonance mode.

Description

technical field [0001] This application claims the benefit under 35 USC 119(e) of U.S. Provisional Patent Application No. 60 / 976,399, filed September 28, 2007, and U.S. Provisional Patent Application No. 60 / 976,977, filed October 2, 2007, which are hereby adopted by References are hereby incorporated in their entirety. [0002] The invention relates to the field of pulleys and sprockets. More specifically, the present invention relates to a chain and sprockets for reducing resonance tension. Background technique [0003] Chain and sprocket systems are often used in automotive engine systems to transmit rotational force between multiple shafts. For example, a sprocket on the driven shaft can be connected by a chain to a sprocket on the idler shaft. In such a chain and sprocket system, rotation of the driven shaft and driven sprocket will cause rotation of the idler shaft and idler sprocket through the chain. In an automotive engine system, multiple sprockets on the cranks...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H7/06F16H55/30
CPCF01L1/022F01L1/02F16H55/30F16H2055/306F16H7/06F16H2057/0087
Inventor K·B·托德M·加西亚
Owner BORGWARNER INC
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