نتایج جستجو برای: aftertreatment
تعداد نتایج: 261 فیلتر نتایج به سال:
Abstract To precisely control a vehicle powertrain to minimize emissions, accurate and detailed models are needed capture the spatio-temporal variability of variables interest. The aim this work is analyze flow temperature fields in geometrically realistic — thus complex exhaust gas aftertreatment system under transient conditions. response these upstream step changes predicted using three-dime...
Nowadays, the major challenge of diesel engines development is simultaneous nitrogen oxides and soot emissions reduction without the thermal efficiency drop. Hence, different combustion concepts should be investigated to reach optimum emission and performance conditions in diesel engines without expensive aftertreatment systems. This paper presents the results of a study on a dual fuel (DF) eng...
Background: The cold-induced inflammation of cryotherapy mayalter the immunologic processes and structural components ofthe hair follicles responsible for AA. The aim of this study was tostudy the efficacy of cryotherapy in alopecia areata, and totalis.Method: Forty-four patients with recalcitrant scalp alopeciaareata or totalis were treated with cryotherapy. The cryo-systemchosen was a closed ...
Environmental chamber (“smog chamber”) experiments were conducted to investigate secondary organic aerosol (SOA) production from dilute emissions from two medium-duty diesel vehicles (MDDVs) and three heavyduty diesel vehicles (HDDVs) under urban-like conditions. Some of the vehicles were equipped with emission control aftertreatment devices, including diesel particulate filters (DPFs), selecti...
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