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Isolator that includes first and second isolation spring arrangements in series

A technology for isolating springs and isolators, applied in springs/shock absorbers, control devices, transportation and packaging, etc., can solve the problem that the isolator does not work ideally

Active Publication Date: 2017-12-01
LITENS AUTOMOTIVE INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While conventional isolators are useful in many vehicular applications, some do not function ideally in applications where a belt is used, such as is sometimes used as part of a Belt Assisted Starter (BAS) drive system. To transmit torque to the crankshaft, where the electric motor is used to drive the belt to drive the crankshaft for the purpose of starting the engine 51

Method used

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  • Isolator that includes first and second isolation spring arrangements in series
  • Isolator that includes first and second isolation spring arrangements in series
  • Isolator that includes first and second isolation spring arrangements in series

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Embodiment Construction

[0021] refer to figure 1 , figure 1 An isolator 10 according to an embodiment of the present invention is shown, which transmits power between an endless transmission member 52, such as an auxiliary drive belt, and a shaft 53a of an MGU (Motor Generator Unit) 53, the The crankshaft pulley 50 on the crankshaft 50a of 51 drives. The isolator 10 isolates the MGU 53 from torsional vibrations in the circulating transmission member 52 that typically occur in an internal combustion engine. For convenience, the endless transmission member 52 may be referred to as a belt, however, any suitable endless transmission member may be used. The isolator 10 is used to isolate devices driven by the engine 51 via the circulating transmission member 52 , such as the MGU 53 .

[0022] The isolator 10 is useful in any engine, but is particularly useful in engines incorporating a BAS (Belt Alternator Starter) system in which the engine 51 initially starts normally (e.g. , using the starter motor...

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Abstract

In an aspect, an isolator is provided for isolating a device driven by an engine via an endless drive member. The isolator includes a shaft adapter that is connectable with a shaft of the device and that defines an isolator axis, a rotary drive member that is engageable with the endless drive member, a first isolation spring arrangement that includes a first torsion spring, and that is positioned to transfer torque between the shaft adapter and an intermediate drive member, and a second isolation spring arrangement that is positioned to transfer torque between the intermediate member and the rotary drive member.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Provisional Patent Application No. 62 / 135,800, filed March 20, 2015, which is incorporated herein in its entirety. technical field [0003] The present disclosure relates to isolators, and in particular to isolators for use on the crankshaft of an engine or on the shaft of a motor generator unit (MGU) in a vehicle where the engine 51 can be started or boosted by the MGU via a belt (e.g., equipped with Engines with belt alternator starter (BAS) drive systems). Background technique [0004] Isolators are known devices mounted on the engine crankshaft and on the auxiliary drive shaft to reduce torsional vibrations transmitted from the crankshaft to the belt driven by the crankshaft. While conventional isolators are useful in many vehicular applications, some do not function ideally in applications where a belt is used, such as is sometimes used as part of a Belt Assisted Starter (BA...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F15/121B60K25/02
CPCB60K25/02B60K2025/022F16F15/12366F16H55/36F16H2055/366F16F15/121F16F15/1216
Inventor 鲍里斯·雷普莱特
Owner LITENS AUTOMOTIVE INC