Patent
Belt alternator starter accessory drive with dual tensioner
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TLDR
In this paper, a dual belt tensioner made as a preassembled unit has a carrier with a central pivot mounted to the engine and first and second carrier arms extending radially from the central pivot.Abstract:
An accessory drive for an engine has a belt driven starter generator adapted for driving and being driven by the engine. In an exemplary embodiment, the drive includes a first engine drive pulley and a second starter drive pulley. A drive belt engages the drive pulleys for driving either pulley from the other. A dual belt tensioner made as a preassembled unit has a carrier with a central pivot mounted to the engine and first and second carrier arms extending radially from the central pivot. A first tensioner mounted on the first arm carries a first tensioner pulley biased against a first belt run adjacent the second drive pulley that is slack during engine starting. A second tensioner pulley carried on the second arm is biased against a second belt run adjacent the second drive pulley that is taut during engine starting A hydraulic strut connected to the second arm, and preferably included in the preassembled unit, provides moderate biasing for the second tensioner pulley during normal engine operation and velocity sensitive resistance, to increased belt forces, that limits reactive movement of the second tensioner pulley during engine starting and transient engine operation.read more
Citations
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Drive belt tensioner for motor generator unit
TL;DR: In this article, a drive belt tensioner assembly for a motor-generator unit consisting of a rotatable drive pulley and a tensioner pulley is configured to engage the drive belt on a side of the motor generator.
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References
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Patent
Accessory and motor/generator belt drive tensioner
Ali Imtiaz,Liu Keming,Hanes Dave +2 more
TL;DR: In this paper, an improved belt tensioner for a belt drive system was presented, which mutually asymmetrically biases the first tensioner and the second tensioner pulley toward movement tending to increase tension upon the power transmission belt.
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Pivoting dual arm chain tensioner system for contacting multiple chain strands
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Patent
Belt drive of an internal combustion engine
Michael Bogner,Rudolf Berger +1 more
TL;DR: In this article, a drive belt of an internal combustion engine has a first pulley mounted on a crankshaft of the engine and a second pulley on a shaft of a starter generator.
Patent
Method of tuning a belt drive system
TL;DR: In this paper, a method of using tensioners (10, 20) to tune a belt drive system is described, where a tensioner (10) having a damping rate is used on an accessory belt slack side and an additional tensioner with a dampening rate on a belt tight side.
Patent
Accessory drive system for an automotive engine
TL;DR: In this article, an accessory drive system for an automotive engine includes a drive pulley attached to an output shaft of the engine and a flexible drivebelt for connecting the drive and driven pulleys.