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System and method for estimating turbo speed of an engine

A turbocharger and engine technology, applied to engine components, combustion engines, engine control, etc., can solve problems such as reducing system reliability and increasing the cost of engine management systems

Active Publication Date: 2017-08-18
盖瑞特动力科技(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the addition of a compressor outlet pressure sensor may increase the cost of the engine management system and may even reduce the reliability of the system due to the presence of additional failure mechanisms

Method used

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  • System and method for estimating turbo speed of an engine
  • System and method for estimating turbo speed of an engine
  • System and method for estimating turbo speed of an engine

Examples

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Embodiment Construction

[0017] For the terms defined below, these definitions shall apply unless a different definition is given in the claims or elsewhere in this specification.

[0018] All numerical values ​​herein, whether expressly indicated or not, are assumed to be modified by the term "about". The term "about" generally refers to a series of numbers that those skilled in the art would consider equivalent to (ie, having the same function or result) the recited value. In many instances, the term "about" may include numbers that are rounded to the nearest significant figure.

[0019] The recitation of numerical ranges by endpoints includes all numbers subsumed in that range (eg, 1 to 5 includes: 1, 1.5, 2, 2.75, 3, 3.80, 4, and 5).

[0020] As used in this specification and the appended claims, the singular forms "a," "an," and "the" include plural referents unless the content clearly dictates otherwise. As used in this specification and the appended claims, the term "or" is generally used in ...

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Abstract

The speed of a turbocharger may be estimated using data from sensors that are readily available in most engine management systems. In some cases, a pressure measurement from a MAP sensor may be used, in combination with one or more computational models, to provide an efficient, lower cost estimate of turbo speed that can be used to control operation of the engine and / or the turbocharger.

Description

technical field [0001] The present disclosure relates generally to automotive engine control, and more particularly to estimating the rotational speed of a turbocharger of the engine. Background technique [0002] The speed at which the turbocharger rotates is an important parameter for controlling a turbocharged engine. The maximum turbocharger speed may define the maximum achievable airflow, which in turn defines the maximum achievable torque of the engine. Exceeding this maximum turbocharger speed may result in mechanical damage to the turbocharger and ultimately may result in engine failure. Accordingly, a goal in controlling the operation of some turbocharged engines is the ability to achieve high turbocharger speeds without exceeding the maximum allowable speed. [0003] In some cases, turbocharger speed may be measured directly by a dedicated speed sensor, which may utilize, for example, vane counting or similar schemes. This is an expensive solution. In some case...

Claims

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Application Information

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IPC IPC(8): F02D41/14F02D41/00
CPCF02D41/00F02D41/0007F02D41/14F02D2200/0404F02D2200/0406F02D2200/0414F02D2041/1416F02D2041/1433F02D2200/0402F02B37/12F02B2037/122F02M35/1038F02M35/10386F02M35/104Y02T10/12F02D9/02F02D9/105F02D41/1401F02D41/263G01M15/14
Inventor D.帕奇纳Y.刘F-X.布鲁尔哈特M.R.乌钱斯基
Owner 盖瑞特动力科技(上海)有限公司
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