Supplier Spotlight

Video Exclusives

Lucid Air prototype testing

gtr

With 1,000hp and up to 400 miles driving range, the Lucid Air is one of the most exciting EC developments of the year so far. Watch here the prototype being tested earlier this year.


Audi Q8 concept

gtr

As Audi gets ready to launch the Q8 PHEV production model, here's a detailed under-the-skin look into its 330kW, 700Nm, 1,000km driving range powertrain.

Click here/on image to watch video

Web Exclusives

« back to listing

Continental begins new urea sensor production

Continental has begun production on a new urea sensor that it says will help make diesel exhaust gas aftertreatment more efficiency and reliable.

 

Continental has begun production on a new urea sensor that it says will help make diesel exhaust gas aftertreatment more efficiency and reliable.

The company says that sensor-aided denitrification supports fulfilment of legal requirements and will help build driver trust in vehicle emissions.

The urea treatment process depends on precise monitoring, and Continental is launching such a sensor for the first time to measure the quality, level and temperature of the urea solution in the tank.

“Our urea sensor technology supports SCR systems. First of all, the sensor provides the data basis to adapt the injected amount of urea to the instantaneous engine load. Secondly, this data is required for the onboard diagnosis of the exhaust-gas aftertreatment function. In addition, the sensor monitors the urea fill level in the tank to help the driver top-up AdBlue in good time”, said Klaus Hau, head of the sensors and actuators business unit in Continental’s Powertrain Division.

The new sensor contains piezo elements, a negative temperature coefficient (NTC) resistance thermometer, and an application-specific integrated circuit (ASIC), all of which Continental is already using successfully for measuring oil levels. Ultrasonic signals measure both the urea concentration in the water and the tank’s fill level. For this purpose, the urea sensor can either be welded into the tank or into the pump unit.

“Whenever precision is a must in the vehicle, sensors are in great demand,” adds Hau. “SCR provides a prime example. If an SCR system is to reach its maximum efficiency, the injected amount of AdBlue will have to be dosed precisely in accordance with the exhaust-gas flow and composition”.

Continental says that several factors are at work here. The injected amount of urea solution needs to be calculated for the instantaneous engine load. In order to calculate the right amount to be injected, the actual urea content in the AdBlue solution (its quality) needs to be known. Also, the urea solution must not get too cold. Therefore the temperature within the urea tank has to be monitored in order to ensure constant system availability by activating a heating system when needed.

There must also be sufficient urea in the tank – the ultrasonic sensor principle offers the ability to measure the liquid from outside the tank. This is not only a key element for freezing resistance, it also avoids any corrosion from occurring at the sensor element or the electronics.

The innovative urea sensor can provide all this data as an input value for the urea metering, according to Dr Wighard Jäger, head of R&D fluid sensors, business unit sensors and actuators: “An increased SCR control quality helps to avoid overshooting or undershooting during the urea metering process. Once you dynamically control the injected urea amount by processing the sensor signal, it is much less likely that either NOx or ammonia will slip through the SCR catalyst.”

Research and development work for the urea sensor was conducted at Continental’s facility in Nuremberg, Germany, and production is taking place at Frenstat in the Czech Republic.

February 9, 2016

 

Read Latest Issue

International Engine of the Year Awards
Read Latest Issue
Read Latest Issue

Web Exclusive Articles

Measuring pressure during engine development
FPT Motorenforschung, a Swiss manufacturer of engines for commercial vehicles, construction equipment and agricultural machinery, uses Keller’s M5 pressure transmitters in its test benches to achieve reliable, precise measurement results
Read Now

Engines on test: Hyundai-Kia G3LC-6iL
At the center of the all-new Kia Rio, the all-aluminum three-cylinder TGDi unit uses a host of the latest technologies such as integrated turbocharger and manifold, variable valve timing and laser-drilled injectors to boost power, refinement and efficiency over the outgoing 1.4-liter engine
Read Now

Lucid Air prototype testing
With 1,000hp and up to 400 miles driving range, the Lucid Air is one of the most exciting EC developments of the year so far. Watch here the prototype being tested earlier this year.
Read Now


Supplier Spotlight

Supplier SpotlightClick here for listings and information on leading suppliers covering all aspects of the engine technology industry. Want to see your company included? Contact aboobaker.tayub@ukipme.com for more details.

فروشگاه اینترنتی فروشگاه اینترنتی فروشگاه اینترنتی دانلود فیلم شعر فال حافظ کانال تلگرام کانال تلگرام بی بی سی فارسی من و تو فروشگاه اینترنتی فروشگاه اینترنتی کانال تلگرام چت روم لز رادیو فردا خبر download youtube عکس های لو رفته کانال تلگرام گروه تلگرام کانال سک30در تلگرام کانال سک30در تلگرام کانال تلگرام کانال سک30در تلگرام کانال تلگرام کانال تلگرام لوتی کانال سک30در تلگرام کانال سک30 در تلگرام کانال سوپر کده تلگرام کانال تلگرام خفن کانال تلگرام +18 کانال تلگرام لوتی کانال سک30در تلگرام کانال سک30 در تلگرام کانال سوپر کده تلگرام کانال تلگرام خفن کانال تلگرام +18 Google کانال تلگرام لوتی کانال سک30در تلگرام کانال سک30 در تلگرام کانال سوپر کده تلگرام کانال تلگرام خفن کانال تلگرام +18 کانال تلگرام لوتی کانال سک30در تلگرام کانال سک30 در تلگرام کانال تلگرام کانال تلگرام خفن کانال تلگرام +18 کانال تلگرام لوتی کانال سک30در تلگرام کانال سک30 تلگرام کانال سوپر کده تلگرام کانال تلگرام خفن کانال تلگرام +18 کانال تلگرام لوتی کانال سک30در تلگرام کانال سک30 در تلگرام کانال سوپر کده تلگرام کانال تلگرام خفن کانال تلگرام +18

Submit your industry opinion

Industry BlogDo you have an opinion you'd like to share with the engine technology community? We'd like to hear your views and opinions on the leading issues shaping the industry. Share your comments by sending up to 500 words to d.slavnich@ukipme.com

Submit Your Recruitment Ad

Recruitment AdTo send us your recruitment advertising or to receive information on placing a banner please email aboobaker.tayub@ukipme.com