Exhibition 2018 / 2017 / 2016
Catalyst technology for the gasoline engine cars
Exhibition 2018 / 2017 / 2016
"The Gasoline Particulate Filter(GPF) that is required to comply with Euro 6 regulations in Europe and LEVⅢin the U.S.A. We have been developing advanced aftertreatment technology to suppress emission of the particle matter (PM) (※1) in addition to purifying exhaust emissions by applying 3-way catalyst on GPF"
"Vehicle emissions control regulates upper limit of pollutant emission such as ""Carbon monoxide(CO)"", ""Nitrogen oxide(NOx)"", hydrocarbon and black exhaust that are from engine of cars and motorcycles. The regulation called ""EURO6"" that regulates emission control of the air pollutant substances from vehicles has been enforced by EU, European Union since September 1st, 2014. Particularly, control value of emission amount of ""Particulate matter (PM)"" and ""Nitrogen oxide (NOx） are strict in EURO6. The new cars sold in EU has to clear the control value in EURO 6 since January 1st, 2015."
EURO6 d-TEMP which is stricter emission standard will be introduced from September 2017 in order to strengthen control value of "Particle number of exhaust particulate(PN). "Particulate matter (PM)" from car engine has been controlled by "emission weight" but the emission weight of ultra fine particles that is easy to be taken into human bodies and concerned about affecting health is difficult to be reflected in numerical value. So "PN control" that regulates particles by emission number is introduced.
※1) PM: Particulate Matter
※2) PN: Particulate Number
"The PN (Particle number of exhaust particulate) regulations sets a limit to the number of fine particulates contained in the gas emissions, unlike the PM(Particulate matter) regulations that controls the weight of particulates. ""Gasoline Particulate Filter(GPF)"" with a function to collect fine particle in the emission from the car engine is then expected to be a means to satisfy PN regulations "
"But the installation of a GPF will just cause the increase in the total cost and occupy the more space for fitting it. Then, what we are now developing is a ""Coated GPF "" that has the functions of both a GPF and a 3-way catalyst. It can be installed to replace either one of the two of existing 3-way catalyst that are normally mounted at the underfloor and just beneath the gasoline-engine per vehicle, it'll help keep the vehicle's total cost low and save the limited installation space. "
In order to correspond to the severer exhaust gas standard in the future, it is assumed that the aftertreatment device has to be designed with two or more substrates from the view point of quality assurance of the exhaust gas purification. High heat resistance of the catalyst is required for the case of placing Coated GPF "Directly below the engine"
For more strengthened exhaust gas standard, TWC (CC and /or UF/C) is required to have the low-temperature activity that purifies exhaust gas components at a lower temperature because TWC is placed in a back side due to installation space and has to purify exhaust gas component such as HC, CO and NOx at a lower temperature.
Lowering the exhaust gas temperature
Low-temperature activity is the important problem
"We take pride in overcoming problem of the ""Low-temperature activity"" with our technology of 3-way catalyst such as ""Activity point controlling"" and ""High performance OSC"" that we have cultivated since our company's foundation. We also cover the lineup of ""3-way catalyst"" and ""Coated GPF"" foreseeing the exhaust gas standard in the future which will be more strengthened. We are going to keep challenging to clear the assumed problems. "