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Oxygen sensor and internal combustion engine comprising said sensor

A sensor, internal combustion engine technology, applied in machine/engine, fuel air intake, combustion air/combustion-air treatment, etc. The effect of water hammer strength

Active Publication Date: 2015-01-07
VTESCO TECH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because this Lambda detector gets extremely hot in the exhaust, it has an expensive high temperature housing
Therefore, in the prior art, cost-intensive and expensive devices are used to measure the oxygen fraction in the inhaled gas

Method used

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  • Oxygen sensor and internal combustion engine comprising said sensor
  • Oxygen sensor and internal combustion engine comprising said sensor

Examples

Experimental program
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Embodiment Construction

[0019] figure 1 The sensor 1 is shown only purely schematically with a sensor element 6 , which comprises a rod-shaped carrier, on the front end of which the measuring electrode 2 is arranged. In this case, for example, interdigital electrodes can be used. The printed leads of the measuring electrodes are figure 1 The middle extends rightward until the middle of the contact portion (not shown). The plastic housing 5 forms a carrier for the sensor element and has evaluation electronics (not shown) for the sensor element.

[0020] The sensor element 6 is surrounded by a metal cover as protective tube 3 . The sensor element 6 extends coaxially with the metal cover, which is provided with openings (not shown), whereby the measuring electrode 2 of the sensor element 6 can come into contact with the inhaled air, the oxygen content of which is to be measured. The heat generated by the sensor element 6 itself is dissipated before it reaches the plastic housing forming the carrier ...

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PUM

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Abstract

The invention relates to a sensor for detecting the oxygen content in the intake tract of an internal combustion engine. The sensor comprises a sensor element provided with a measurement electrode, a metal cap surrounding the sensor element, a heat dissipating element connecting a sensor element and a metal cap, and a maintaining element for the sensor element, said maintaining element being embodied as a plastic housing and housing the evaluation electronics for the sensor element. The invention also relates to an internal combustion engine, a sensor of said type being located in the air intake tract between the charge air cooler and the cylinder block.

Description

technical field [0001] The invention relates to a sensor for detecting the oxygen content in the intake part of an internal combustion engine. The invention is also directed to an internal combustion engine having such an oxygen sensor. Background technique [0002] In internal combustion engines, it is desirable to detect the oxygen content of the intake air in the intake part of the internal combustion engine in a series of situations. This is the case, for example, when the internal combustion engine is equipped with a device for exhaust gas recirculation in the intake section. In this case, the exhaust gas recirculation rate should be determined by measuring the oxygen content. Inhaled O in the air without exhaust gas recirculation 2 The content is approximately 21% and decreases with increasing proportion of exhaust gas recirculation. [0003] According to the prior art, conventional linear lambda detectors (Lambdasonden) are used as oxygen sensors in this case, as ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M35/10G01N27/407
CPCG01N27/4077F02M35/10373F02M35/1038F02D41/0072F02D41/144F02D41/1454F02D2041/285F02D2200/0406F02M26/22F02M26/45
Inventor 约翰内斯·安特安德烈亚斯·威尔德根
Owner VTESCO TECH GMBH