Desenvolvida numa universidade britânica, é similar aos sistemas actuais mas muito mais promete ser muito mais eficaz
https://www.autocar.co.uk/car-news/i...rket-two-years
A simple, affordable and apparently foolproof solution to the problem that has led to the current worldwide ‘demonisation’ of diesel engines — emissions of life-limiting NOx — has been discovered by a team of British automotive research specialists at Loughborough University.
Like current selective catalytic reduction (SCR) systems, it then uses freed ammonia “literally to rip NOx apart”, leaving only nitrogen and water. The crucial difference between the two systems is that ACCT fluid keeps working at high efficiency in low exhaust temperature conditions that challenge current systems.
Preliminary tests on a city-based stop-start Skoda taxi indicate that ACCT can capture 98% of exhaust-borne NOx, compared with 60% for the same car running a conventional EU6 system — even before researchers had a chance to ‘tune’ the ACCT system for the best performance.
Experts with knowledge of the development are starting to talk in terms of “virtually zero-emission” diesel engines and citing ACCT as being even more important than the arrival of the common-rail diesel.
As Hargrave explained, there’s a deep irony in this. While NOx has hit the headlines, CO2 continues to kill the planet. “NOx is serious,” he said, “but it’s really a point-source problem. It only matters in a tiny minority of locations.
"Solve it and you can get on with reducing CO2, which is important everywhere
https://www.autocar.co.uk/car-news/i...rket-two-years
A simple, affordable and apparently foolproof solution to the problem that has led to the current worldwide ‘demonisation’ of diesel engines — emissions of life-limiting NOx — has been discovered by a team of British automotive research specialists at Loughborough University.
Like current selective catalytic reduction (SCR) systems, it then uses freed ammonia “literally to rip NOx apart”, leaving only nitrogen and water. The crucial difference between the two systems is that ACCT fluid keeps working at high efficiency in low exhaust temperature conditions that challenge current systems.
Preliminary tests on a city-based stop-start Skoda taxi indicate that ACCT can capture 98% of exhaust-borne NOx, compared with 60% for the same car running a conventional EU6 system — even before researchers had a chance to ‘tune’ the ACCT system for the best performance.
Experts with knowledge of the development are starting to talk in terms of “virtually zero-emission” diesel engines and citing ACCT as being even more important than the arrival of the common-rail diesel.
As Hargrave explained, there’s a deep irony in this. While NOx has hit the headlines, CO2 continues to kill the planet. “NOx is serious,” he said, “but it’s really a point-source problem. It only matters in a tiny minority of locations.
"Solve it and you can get on with reducing CO2, which is important everywhere
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