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System and method for controlling the torque of traction engine of motor vehicle on the basis of the rotational velocity and the depression of the acceleration pedal

A rotational speed, accelerator pedal technology applied in directions such as traction using engine drive, controlled drive, battery/battery traction, etc.

Inactive Publication Date: 2015-04-08
RENAULT SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This has not been addressed as it is currently believed to form part of the electric vehicle characteristics

Method used

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  • System and method for controlling the torque of traction engine of motor vehicle on the basis of the rotational velocity and the depression of the acceleration pedal
  • System and method for controlling the torque of traction engine of motor vehicle on the basis of the rotational velocity and the depression of the acceleration pedal
  • System and method for controlling the torque of traction engine of motor vehicle on the basis of the rotational velocity and the depression of the acceleration pedal

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Embodiment Construction

[0034] This system and method makes it possible to provide a torque reserve for higher rotational speeds by reducing the performance of the electric motor, which leaves room for increasing this performance over time or as rotational speed increases.

[0035] It is possible to generalize this control system and method to any motorized vehicle where the perceived acceleration sensation plays an important role in the user experience. Because they operate at a high level producing torque set points, they can be applied to all gearbox-associated motor technologies (e.g. internal combustion engine, electric, hybrid ).

[0036] In a first embodiment, the control system and method enable the vehicle to achieve an acceleration similar to that of an internal combustion engine vehicle under full load. For this purpose, the goal is to control the torque curve produced by the propulsion unit according to the inherent torque curve of the electric motor.

[0037] The maximum torque curve o...

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PUM

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Abstract

A system and method for controlling the torque of an engine of a motor vehicle on the basis of the rotational velocity and the depression of the acceleration pedal. A system for controlling the torque of an engine (15) helping to propel a motor vehicle comprising: sensors (14) capable of measuring the rotational velocity (15) and the depression of the acceleration pedal, a means (12) for determining a torque setpoint capable of determining a torque setpoint that increases with the rotational velocity and starts with a reference torque for a reference rotational velocity, and the means (12) for determining being connected to the output of the electric engine (15).

Description

technical field [0001] The technical field of the invention is the control of electric motors used to propel a motor vehicle, bringing together all motor technologies and more specifically controlling the torque as a function of the rotational speed of the electric motor. Background technique [0002] Electric motors typically have a high torque at low rotational speeds, after which the torque decreases as the rotational speed increases. [0003] In contrast, internal combustion engines have a maximum torque at intermediate rotational speeds. Once the rotational speed changes above or below this intermediate rotational speed, the maximum torque drops. [0004] Drivers of electric vehicles experience a feeling of exhaustion as speed increases if they demand a high level of acceleration corresponding to a depression of the accelerator pedal exceeding 50%. Due to the torque curve of the electric motor and the single-ratio gearbox, the vehicle's acceleration drops off sharply ...

Claims

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Application Information

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IPC IPC(8): B60L11/12B60L11/14B60L15/20B60W10/08B60L50/15B60L50/16
CPCB60L2240/423B60L15/20Y02T10/7275B60L2250/28B60L2250/26B60L11/14Y02T10/7077Y02T10/642B60L11/12B60W10/08B60L2240/421Y02T10/72Y02T10/70B60L50/16B60L50/51Y02T10/64Y02T10/7072
Inventor A·德 博尔索莱列
Owner RENAULT SA