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News — Car Exhaust

Emission Reduction in Diesel Engines Tested with K-33 CO2 Sensor

High compression diesel automobile engines are popular worldwide because of their high fuel mileage. The problem with using diesel fuel is the amount of nitrogen oxides (NOx) they expel. To reduce NOx, automotive manufactures use cooled exhaust gas recirculation (EGR) to reduce combustion temperatures. However, cooler temperatures result in higher levels of particulate matter (PM). This “NOx-PM tradeoff” was studied using our K-33 CO2 sensor in a paper titled, Emission Reduction and Assisted Combustion Strategies for Compression Ignition Engines with Subsequent Testing on a Single-Cylinder Engine by J. Colter Ragone at the Graduate Faculty of the University of Kansas. Ragnone...

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Climate Efforts Falling Short, U.N. Panel Says

BERLIN — Delivering the latest stark news about climate change on Sunday, a United Nations panel warned that governments are not doing enough to avert profound risks in coming decades. But the experts found a silver lining: Not only is there still time to head off the worst, but the political will to do so seems to be rising around the world. In a report unveiled here, the Intergovernmental Panel on Climate Change found that decades of foot-dragging by political leaders had propelled humanity into a critical situation, with greenhouse emissions rising faster than ever. Though it remains technically possible...

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Use CO2 Meter to Tune Your Gasoline Engine

  Modern 4-stroke gasoline engines are precision instruments compared to even models a few years ago. Today’s engines are designed to maximize power and gas mileage while minimizing harmful exhaust gases, especially carbon monoxide and sulphur oxides. Therefore, it should come as no surprise that engine diagnosticians now use shop-grade gas analyzers to test the exhaust gases coming from a car. In fact, we have customers who are using meters like our 30% CO2 Sampling Data Logger with our extreme moisture filter to allow direct measurement. The chemistry of internal combustion is simple: hydrocarbons (gasoline), oxygen and nitrogen (air) are...

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