The effects of clogged air filters on the fuel economy, acceleration, and emissions of three late model turbocharged diesel-powered vehicles were examined. Because modern diesel engines operate without throttling (or with minimal throttling), a different result could be anticipated. In contrast, a recent study showed that the fuel economy of modern gasoline vehicles is virtually unaffected by filter clogging due to the closed loop control and throttled operation of these engines. Older studies of carbureted gasoline vehicles have indicated that replacing a clogged or dirty air filter can improve vehicle fuel economy and, conversely, that a dirty air filter can be significantly detrimental to fuel economy. Described are measured results for increasing air filter pressure drop in turbocharged diesel-engine-powered vehicles, with primary focus on changes in vehicle fuel economy but also including emissions and performance. This paper addresses the issue of whether air filter replacement improves fuel economy. Proper maintenance can help vehicles perform as designed, positively affecting fuel economy, emissions, and overall driveability. The biggest differences were measured under extreme conditions when the air filter had been almost fully clogged, or the air had been delivered into the engine under pressure. The results from this article show a relatively low impact of air filter on the features studied. The importance of the article lies in quantification of the impact of clogged air filter on selected vehicle features. For higher result objectivity, the measurements haveīeen done under some extreme conditions as well, with both the air filter fully clogged and forced air induction. The measurements have been performed under laboratory conditions. The article pays attention to the impact of clogged air filter on selected vehicle characteristics including a vehicle’s dynamic features, fuel consumption and composition of the exhaust gases. It can further degrade the vehicle’s ability to accelerate and, therefore, have an impact on road driving safety, or it can eventually make a vehicle performance worse or cause a change in the exhaust gas composition. Thus, there is a conditionįor air mass delivered into the engine’s cylinders to be reduced. Removal of yeast and strong improvement of microbiological stability.While a vehicle is driving, the air filter is gradually being clogged.
#AF FILTER PDF FREE#
The beer is almost yeast free after filtration. Suitable for most beer types.įor Export, Pilsner or other types of bright beers. Unique filter surface for higher particle loads. Polishing filtration for ales, amber and lighter beers. Perfect for dark beers, IPA’s or where a slight turbidity is desired. Ideal sheet for pre-filtration of dry-hopped or other naturally hazy beers.įor coarse filtration.
#AF FILTER PDF PLUS#
(please note, all grades are available in lenticular and special formats too) FIBRAFIX FILTER SHEETSįILTRODISC PLUS 2 LENTICULAR FILTER MODULE Removes larger particles such as filter aids, no adsorption effects The filter life depends heavily on the sedimentation effects and pre-treatment of the beer (storage, dry hopping, etc.) Removes only surface deposits (yeasts, protein compounds, hops, etc.)
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