Abstract
The article concerns the use of an in-cylinder catalyst that allows reducing the exhaust emissions during diesel engine operation. This is an additional method of exhaust emission reduction – however, the active component is placed inside the combustion chamber – hence much closest to the combustion process. This allows reducing the emissions at the very source (catalyst applied on the glow plugs). Such solutions are necessary because the reduction of exhaust emissions from vehicles is a key aspect of reducing the negative impact of transport on the environment.
Highlights
Due to the way passenger cars are used, especially during urban driving, they are characterized by low mileage between individual starts, so they often experience ignition in a cold state and operate in underheated engine conditions [6]
Due to how passenger cars are used, mainly for urban driving, there is little distance covered between individual starts (Fig. 1), so they are often started from the cold engine state and operate in unfavorable engine conditions
A new solution used in this research was the implementation of prototype glow plugs, with a 34 mm long heating section (4 mm longer compared to previous solutions – Fig. 4)
Summary
Due to the way passenger cars are used, especially during urban driving, they are characterized by low mileage between individual starts, so they often experience ignition in a cold state and operate in underheated engine conditions [6]. Cold engine-starts cause about 90% of the total hydrocarbon and carbon monoxide emissions and 50–70% of oxides emissions from passenger cars in the Nordic countries, they are a significant contributor of harmful substances emissions from automotive sources. Due to how passenger cars are used, mainly for urban driving, there is little distance covered between individual starts (Fig. 1), so they are often started from the cold engine state and operate in unfavorable engine conditions. There are many solutions of exhaust aftertreatment systems, and their effectiveness often depends on the mutual relations and cooperation of individual system components (Fig. 2)
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