Electronics

Gas Analyzer helps optimize the performance of carbon canisters #Engineering #GasAnalysers #CombustionEmissions @SignalGroup @ MAHLE_Group 

Many Signal Group customers use their gas analyzers to measure combustion emissions from engines under development. However, internal combustion engine vehicles also represent the opportunity for evaporation emissions, so to prevent such emissions, the vehicle is fitted with carbon canisters. MAHLE ANAND Filter Systems – India, the world’s leading manufacturer of carbon canisters, supplies carbon using Signal’s S4 SOLAR analyzer, a flame ionization detector (FID), as part of an ongoing R & D program. The performance of the canister is optimized. For global and domestic car manufacturers.

Sagar Awate, a test lab manager based at the MAHLEANAND Filter Systems facility in Pune, India, has been using Signal’s heated FID analyzer to measure total hydrocarbons (THC) for over two years. “The S4 SOLARFID analyzer is an important instrument in our R & D program,” he explains. “We are constantly trying new fuels and following the CARB and EPA procedures used around the world to investigate carbon canister emission levels (DBL – daytime respiratory loss) at different temperatures. Profile gradients are created using a programmed environment chamber.

“By collecting and analyzing evaporation emissions from carbon canisters over a particular temperature profile, the canister’s bleed emission levels can be fully assessed. Therefore, the analyzer is a gas sample collected in a Kynar bag. We are pleased to be able to report that the S4 SOLARFID Analyzer has worked very well, playing an important role in finding THC ppm values ​​from. Our staff has a user-friendly interface and easy-to-configure operating software. I am very happy with the use of. “

Carbon canister

The main function of the carbon canister is to reduce the amount of air pollution caused by the vehicle and at the same time increase fuel efficiency. Hydrocarbon vapors are generated from the fuel in the fuel tank, even when the engine is stopped. The carbon canister is designed to trap the steam and feed it back to the engine.

The carbon canister is filled with charcoal or carbon pellets capable of adsorbing hydrocarbon vapors. The canister input (tank port) connects to the fuel tank and the canister output (purge port) connects to the purge valve on the vehicle intake manifold. The canister vent port is open to the atmosphere.

When the vehicle is turned off, the pressure in the fuel tank becomes imbalanced and the fuel evaporates. Since the tank is connected to the canister by a hose / pipe, all steam generated in the fuel tank goes into the carbon canister. In line with the canister’s design capabilities, it retains the steam coming from the tank while the vehicle is parked. Each time the engine starts, the purge valve opens and the steam in the canister is desorbed into the air sent to the engine where it burns. This process is known as the “purge” of carbon canisters. During the purging process, fresh air from the atmosphere enters the canister through the vent port and flows towards the engine, carrying fuel vapor. It will take a few minutes for the purging process to complete. The “fresh” canister can then absorb the vapor from subsequent cycles. The canister will continue to function while the vehicle is running.

Monitoring of evaporative hydrocarbons

The Carbon Canister Test is a recommendation of the Japan Automobile Research Institute (USCAR) LEVIII / TIER 3 Breed Emission Test Procedure (BETP) (https://uscar.org/wpfd_file/uscar-lev-iii-tier-3-bleed-emissions-test-procedure-2/).

USCAR procedures allow equipment manufacturers to obtain reproducible and reproducible results. Two methods of hydrocarbon capture are specified in the document. Bag method and SHED (sealed housing evaporation measurement) method. Both must use FID. Signal Group can provide FID analyzers for both methods.

FID is the standard reference method for analyzing gaseous hydrocarbons. The FID is a sensitive but non-selective sensor that uses a flame to remove hydrogen atoms from hydrocarbon molecules to form carbon radicals and electrons. This is usually a short-lived condition in which the charged components are rapidly recombined, but in an electrostatic field, the opposite charged components are driven towards the electrodes. This creates a valid current in the flame. This is proportional to the number of hydrocarbon molecules present.

The SOLAR range of FID is the latest 4th Generational Design; Leverage over 40 years of knowledge and experience to achieve accuracy, reliability and ease of use. Regarding the benefits of this latest technology, James Clements, Managing Director of Signal Group, said: “All S4 analyzers come with software that allows you to operate the analyzer remotely using LAN / RS232, which means that you can access your monitoring data anytime, anywhere and have questions about your service. Can log in remotely. “

https://engineering-update.co.uk/2022/06/23/gas-analyser-helps-optimise-carbon-canister-performance-engineering-gasanalysers-combustionemissions-signalgroup-mahle_group%EF%BF%BC/ Gas Analyzer helps optimize the performance of carbon canisters #Engineering #GasAnalysers #CombustionEmissions @SignalGroup @ MAHLE_Group 

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