logo
Home
about us
company profile
products

Engine NOx Sensor

Car NOx Sensor

Nitrogen Oxide NOx Sensor

Truck Blower Motor

Urea Doser Pump

PM Sensor

Truck ABS Sensor

Exhaust Temperature Sensor

Crankshaft Position Sensor

Truck Pressure Sensor

Power Window Switch

VGT turbo actuator
video
events
news
cases
contact us
quote
english
français
Deutsch
Italiano
Русский
Español
português
Nederlandse
ελληνικά
日本語
한국
العربية
हिन्दी
Türkçe
bahasa indonesia
tiếng Việt
ไทย
বাংলা
فارسی
polski
home
about us
products

Engine NOx Sensor

Car NOx Sensor

Nitrogen Oxide NOx Sensor

Truck Blower Motor

Urea Doser Pump

PM Sensor

Truck ABS Sensor

Exhaust Temperature Sensor

Crankshaft Position Sensor

Truck Pressure Sensor

Power Window Switch

VGT turbo actuator
video
events
news
cases
contact us
quote
banner banner

News Details
Home > News >

Company news about what is Nox sensor?

Events

News

Cases
Contact Us
Mrs. April
Sales@wegoparts.com
86-18100162701
Contact Now

what is Nox sensor?

2025-10-14

A NOx sensor (Nitrogen Oxide sensor) is an electrochemical device used to measure the concentration of nitrogen oxides (NOx) in exhaust gases, primarily for automotive emission control systems‌， It typically consists of:

‌Core components‌

  • Two internal chambers: one for sample gas intake with a diffusion-limiting passage, and another with a NOx-reducing catalyst for atmosphere introduction‌
  • An electrochemical pumping cell to regulate oxygen partial pressure in the sample chamber‌1.
  • A sensor cell that outputs an electromotive force proportional to oxygen partial pressure, enabling NOx concentration calculation‌13.

  • ‌Applications‌

    • ‌Diesel engines‌: Used in pairs (upstream/downstream) for SCR (Selective Catalytic Reduction) systems to monitor NOx conversion efficiency (≥95% under China VI standards)‌24.
    • ‌OBD compliance‌: Detects emissions for onboard diagnostics and urea injection control‌2.

  • ‌Technical variants‌

    • ‌Current-type sensors‌: Utilize multiple electrochemical cells to pump out O2 before NOx measurement‌3.
    • ‌HTCC ceramic chips‌: integrate heaters and multilayer ceramic elements for precise NOx/O2 detection via current measurement‌4.
    •  
      •  
banner
News Details
Home > News >

Company news about-what is Nox sensor?

Events

News

Cases

what is Nox sensor?

2025-10-14

A NOx sensor (Nitrogen Oxide sensor) is an electrochemical device used to measure the concentration of nitrogen oxides (NOx) in exhaust gases, primarily for automotive emission control systems‌， It typically consists of:

‌Core components‌

  • Two internal chambers: one for sample gas intake with a diffusion-limiting passage, and another with a NOx-reducing catalyst for atmosphere introduction‌
  • An electrochemical pumping cell to regulate oxygen partial pressure in the sample chamber‌1.
  • A sensor cell that outputs an electromotive force proportional to oxygen partial pressure, enabling NOx concentration calculation‌13.

  • ‌Applications‌

    • ‌Diesel engines‌: Used in pairs (upstream/downstream) for SCR (Selective Catalytic Reduction) systems to monitor NOx conversion efficiency (≥95% under China VI standards)‌24.
    • ‌OBD compliance‌: Detects emissions for onboard diagnostics and urea injection control‌2.

  • ‌Technical variants‌

    • ‌Current-type sensors‌: Utilize multiple electrochemical cells to pump out O2 before NOx measurement‌3.
    • ‌HTCC ceramic chips‌: integrate heaters and multilayer ceramic elements for precise NOx/O2 detection via current measurement‌4.
    •  
      •  
86-18100162701
Quick link
Home About us Products Video News Cases Contact Us
Quick Contact

Address

Xi'ao Industry Zone, Ruian city, Zhejiang Pro, China 325200

Tel

86-18100162701

86-18100162701
Our Newsletter
Subscribe to our newsletter for discounts and more.
Privacy Policy |  Sitemap  | China Good Quality Engine NOx Sensor Supplier. Copyright © 2022-2025 Ruian wego auto parts co.,ltd . All Rights Reserved.