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Electro-mechanical continuously variable transmission

A transmission and mechanical technology, applied in the field of transmission system, can solve problems such as insufficient use of the available power of the engine, low efficiency, etc.

Inactive Publication Date: 2006-10-18
SILVATECH GLOBAL SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Purely mechanical transmissions are insufficient to ensure efficient use of the engine's available power due to discontinuous ratios, while purely electric transmissions are inherently less efficient at higher operating speeds

Method used

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  • Electro-mechanical continuously variable transmission
  • Electro-mechanical continuously variable transmission
  • Electro-mechanical continuously variable transmission

Examples

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Embodiment Construction

[0021] shown in figure 1 The electromechanical continuously variable transmission (EMCVT) is designed to split the power from the input 40 between the electric transmission branch 20 and the parallel mechanical transmission branch 21 and recombine the power from each branch into a separate One main output 26, the electrical transmission branch 20 using a generator 22 and electric motor 24, and the mechanical transmission branch 21 using shafts and / or gears.

[0022] exist figure 2 A simple planetary gearset 10 shown in more detail in , includes a sun gear 12, planet gears 14, planet gear carrier 16 and ring gear 18 for transferring power from an input 40 of an internal combustion engine or other active power source (not shown) Separated into electric transmission branch 20 and mechanical transmission branch 21.

[0023] Although a combination of six planetary elements is possible, the preferred embodiment is an SRC configuration, namely the sun gear 12 connected to the elec...

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Abstract

The present invention includes an electromechanical continuously variable transmission (EMCVT) that uses a planetary gear system to provide a combination of electrical and mechanical power to a vehicle or stationary equipment. The EMCVT includes a clutch and braking system that allows power from an energy storage unit to be combined with power from an active power input (typically an engine) to provide higher torque output than can be provided by the active power input alone output.

Description

technical field [0001] The present invention relates to a transmission system for use as a propulsion system of a vehicle or as a drive for stationary equipment, which system combines mechanical power and electrical systems. Background technique [0002] Electric powertrains are typically used in large vehicles or stationary equipment. However, as the output / input ratio increases, the motor and generator no longer run at their optimal operating speeds. This reduces the overall efficiency of the drive in the upper half of the drive's operating range. This problem can be overcome by setting multiple gears so that the motor and generator run at or near their optimum speeds, but the complexity of the resulting transmission negates the benefits of using an electric drive. [0003] Another alternative to electric drivetrains is mechanical drivetrains. However, conventional mechanical transmission systems are limited to discrete transmission ratios, which do not allow for contin...

Claims

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Application Information

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IPC IPC(8): F16H3/72B60K6/445B60L50/16B60W10/02B62D11/00B62D11/16
CPCB60K6/365B60K6/387B60K6/445B60W10/02B60Y2200/25B62D11/003B62D11/16F16H2037/0866B60L50/61B60L50/16Y02T10/62Y02T10/7072Y02T10/70F16H3/72B60K6/20B60K6/50
Inventor 杰拉尔德·迪克保罗·德赖斯穆赫辛·巴盖普尔约翰·采帕克
Owner SILVATECH GLOBAL SYST
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