Results 291 to 300 of about 3,999,655 (320)

Cold Start Hydrocarbon Emissions Control

SAE Technical Paper Series, 1995
<div class="htmlview paragraph">The revisions in the United States Clean Air Act of 1990 and recent regulatory actions taken by the California Air Resources Board and European Economic Community require the development of automobiles with much lower tailpipe emissions.
P. L. Burk, J. K. Hochmuth, D. R. Anderson, S. Sung, S. J. Tauster, C. O. Tolentino, J. Rogalo, G. Miles, M. Niejako, A. Punke, U. Dahle   +10 more
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Cold start emissions of traffic

Science of The Total Environment, 1990
Abstract CO, HC, NOx, particulate emissions and fueld consumption were measured on a chassis dynamometer for both hot and cold start. Three urban driving cycles were used, two ECE15 cycles for tuned and as received vehicles and one representative of the actual driving patterns. 51 cars (gasoline and diesel engines) were tested using this method. From
Robert Joumard, Michel Andre
openaire   +1 more source

PHEV Cold Start Emissions Management

SAE International Journal of Alternative Powertrains, 2013
<div class="section abstract"><div class="htmlview paragraph">Plug-in hybrid electric vehicles (PHEV) operate predominantly as electric vehicles (EV) with intermittent assist from the engine. As a consequence, the engine can be subjected to multiple cold start events.
Paul Chambon, Dean Deter, David Irick, David Smith   +3 more
openaire   +1 more source

MeLU: Meta-Learned User Preference Estimator for Cold-Start Recommendation

Knowledge Discovery and Data Mining, 2019
This paper proposes a recommender system to alleviate the cold-start problem that can estimate user preferences based on only a small number of items.
Hoyeop Lee, Jinbae Im, Seongwon Jang, Hyunsouk Cho, Sehee Chung   +4 more
semanticscholar   +1 more source

Abatement of automotive cold start hydrocarbon emissions

SAE Technical Paper Series, 2001
<div class="htmlview paragraph">This paper reports the results of a study on adsorption properties of zeolitic materials with different pore opening and Si/Al ratio towards engine cold start hydrocarbon emissions. Some selected zeolites were deposited on cordierite honeycomb support by a novel technique. Dynamic adsorption tests were performed at
CORBO P., MIGLIARDINI F., AIELLO R., CREA F., CAPUTO, DOMENICO, COLELLA C., IUCOLANO, FABIO   +6 more
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Engine Lubrication in Cold Start-Up

SAE Technical Paper Series, 1989
<div class="htmlview paragraph">Simulated start-up tests were made in a cold chamber with two gasoline-fueled four-cylinder passenger car engines. The engine was motored with a hydraulic motor according to a certain test programme.</div> <div class="htmlview paragraph">The time required for the oil pressure to build up was measured on
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Cold Start on Diesel Engine: Is Low Compression Ratio Compatible with Cold Start Requirements?

SAE International Journal of Engines, 2008
<div class="htmlview paragraph">Future emission standards for Diesel engine will require a drastic reduction of engine-out NOx emissions with very low level of particulate matter (PM), HC and CO, and keeping under control fuel consumption and combustion noise.
P. Pacaud, H. Perrin, O. Laget
openaire   +1 more source

Cold Facts on Cold Starting

SAE Technical Paper Series, 1964
<div class="htmlview paragraph">Analysis of emergency road service data from the American Automobile Association illustrates conclusively that there is a cold starting problem and that it is not confined to the extreme northern areas. It becomes apparent whenever temperature nears the freezing point, and is experienced to some extent by motorists
openaire   +1 more source

Recommendation Engine: Semantic Cold Start

SSRN Electronic Journal, 2020
In this document, we explore methods to provide useful recommendations until activity data is gathered. We refer to this situation as the cold start: users have no activity history, and items have no ratings. Particularly we explore how to successfully cold start recommendations by applying natural language processing.
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Diesel Engine Cold Starting: White Smoke

SAE Technical Paper Series, 1992
<div class="htmlview paragraph">A method to calculate white smoke during starting was developed using a total balance of fuel injected and fuel burned. An accurate needle lift sensor with an in situ calibration was designed and used to measure cyclic fuel injection. The effects of ambient temperature, fuel type, injection timing and the number of
Akram R. Zahdeh, Naeim Henein
openaire   +1 more source