Author: Dennis McClementPublisher:
ISBN:
Category : Air
Languages : en
Pages : 150
Book Description
Quantification of Evaporative Running Loss Emissions from Gasoline-powered Passenger Cars in California
Author: Dennis McClementPublisher:
ISBN:
Category : Air
Languages : en
Pages : 150
Book Description
Quantification of Evaporative Running Loss Emissions from Gasoline-powered Passenger Cars in California
Author: Dennis McClementPublisher:
ISBN:
Category : Air
Languages : en
Pages : 148
Book Description
Quantifying Diesel and Gasoline Powered Motor Vehicle Emissions in California Through Ambient and Source-based Emissions Measurements
Author: Toshihiro KuwayamaPublisher:
ISBN: 9781321363104
Category :
Languages : en
Pages :
Book Description
Diesel and gasoline powered motor vehicle emissions were quantified through both ambient measurements and source-based emissions measurements. Ambient ultrafine particulate matter was measured and chemically speciated for a source apportionment analysis to identify the vehicular contributions at an urban city in California. The efforts of the Emissions Reduction Plan for Ports and Goods Movement in California have been realized through the comparison of ultrafine particulate matter contributions from old-technology diesel engines during different phases of the regulation implementation between years 2009 and 2010. Volatility of primary organic aerosols from gasoline powered motor vehicles was investigated using a series of thermodenuder experiments and particle evaporation modeling. The behaviors and the compositions of gas- and particle-phase motor vehicle emissions under atmospherically relevant conditions were also examined. These analyses will aid scientists and regulators in properly assessing the current state of vehicular emissions regulations, aid in particulate matter exposure studies, improve the understanding of the characteristics of vehicular emissions, and determine the effects of atmospheric parameters on the production and the partitioning of organic pollutants.
Measurement of Fuel Evaporative Emissions From Gasoline Powered Passenger Cars and Light Trucks By the Trap Method
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
The highly preferred SAE Recommended Practice for measuring evaporative emissions from fuel systems of passenger cars and light trucks is the enclosure technique detailed in SAE J171. The sensitivity and accuracy of the enclosure technique is superior to that of the trap method. This recommended practice is retained for historical reference and for use with older vehicles imported into the United States of America. In addition, this trap method is referenced in SAE J171a for making running loss measurements which cannot practically be made in an enclosure. Emissions are measured during a sequence of laboratory tests that simulate typical vehicle usage in a metropolitan area during summer months.
Ozone-Forming Potential of Reformulated Gasoline
Author: National Research CouncilPublisher: National Academies Press
ISBN: 0309064457
Category : Science
Languages : en
Pages : 270
Book Description
The Committee on Ozone-Forming Potential for Reformulated Gasoline was asked whether the existing body of scientific and technical information is sufficient to permit a robust evaluation and comparison of the emissions from motor vehicles using different reformulated gasolines based on their ozone-forming potentials and to assess the concomitant impact of that approach on air-quality benefits of the use of oxygenates within the RFG program. As part of its charge, the committee was asked to consider (1) the technical soundness of various approaches for evaluating and comparing the relative ozone-forming potentials of RFG blends, (2) technical aspects of various air-quality issues related to RFG assessment, and (3) the sensitivity of evaluations of the relative ozone-forming potentials to factors related to fuel properties and the variability of vehicle technologies and driving patterns.
Measurement of Fuel Evaporative Emissions From Gasoline Powered Passenger Cars and Light Trucks Using the Enclosure Technique
Author: SAE IC Powertrain Steering CommitteePublisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
This SAE Recommended Practice describes a procedure for measuring evaporative emissions from fuel systems of passenger cars and light trucks. Emissions are measured during a sequence of laboratory tests that simulate typical vehicle usage in a metropolitan area during summer months: 1.) A 1 h soak representing one diurnal cycle in which temperature of fuel in the vehicle's tank is raised from 15.6 to 28.9 degrees C (60 to 84 degrees F). 2.) A 17.9 km (11.1 mile) run on a chassis dynamometer. 3.) A 1 h hot soak immediately following the 17.9 km (11.1 mile) drive. The method described in this document, commonly known as the SHED (Sealed Housing for Evaporative Determination) technique, employs an enclosure in which the vehicle is placed during the diurnal and hot soak phases of the test. Vapors that escape from all openings in the fuel system--both expected and unexpected--are retained in the enclosure, and the increase in hydrocarbon (HC) concentration of the atmosphere in the enclosure represents the evaporative emissions. Emission values measured by the enclosure method can, therefore, be significantly different than those obtained by the former trap method, depending on fuel system configuration and component design.
California Evaporative Emission Standards and Test Procedures for 1978 and Subsequent Model Liquefied Petroleum Gas- Or Gasoline-powered Motor Vehicles
Author: California. Air Resources BoardPublisher:
ISBN:
Category : Air
Languages : en
Pages : 12
Book Description
Progress in Control of Vehicle Emissions
Author: John H. LudwigRunning Loss Evaporative Emissions Determination by the Point Source Method
Author: Research Plan
Author: California. Air Resources BoardPublisher:
ISBN:
Category : Air
Languages : en
Pages : 110
Book Description