Download or read book SAE 2003 04 0042 Temperature and heat transfer measurements in the exhaust system of a diesel powered light duty vehicle written by P. A. Battiston and published by . This book was released on 2003 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experimental heat transfer study was performed on the exhaust system of a diesel-powered, light-duty vehicle. A methodology was developed to compute the steady-state heat-loss rate of a component based on the first law of thermodynamics for flowing multi-component reactive mixtures and on gas temperature and exhaust gas concentration measurements across the component. Most of the energy loss of the exhaust occurred in the turbocharger, as expected, followed by losses in the takedown section, the tailpipe, the closed-couple catalyst, and the underbody Lean-NOx-Trap (LNT), which had the energy loss. The heat transfer for the takedown-pipe and tailpipe were very well correlated with standard equations of the form Nusselt NO. a(Reynolds No.)b. The augmentation in heat loss rates at the takedown-pipe and tailpipe over that of a steady-state, fully developed, turbulent, pipe-flow was relatively modest in contrast to the findings of an earlier study. All the catalytic exothermic energy release came from the closed-coupled catalyst while the underfloor LNT relied solely on convective heating. The fuel step transient tests at constant speed indicated the importance of thermal storage of the metal walls during cold start.

Download or read book Measurement of Light Vehicle Stationary Exhaust System Sound Level Engine Speed Sweep Method written by Light Vehicle Exterior Sound Level Standards Committee and published by . This book was released on 2008 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This SAE Recommended Practice establishes the test procedure, environment, and instrumentation to be used for measuring the exterior exhaust sound level for passenger cars, multipurpose vehicles, and light trucks under stationary conditions providing a continuous measure of exhaust system sound level over a range of engine speeds.This document applies only to road vehicles equipped with an internal combustion engine.The method is designed to meet the requirements of simplicity as far as they are consistent with reproducibility of results under the operating conditions of the vehicle.It is within the scope of this document to measure the stationary A-weighted sound pressure level during: measurements at the manufacturing stage measurements at official testing stations measurements at roadside testingIt does neither specify a method to check the exhaust sound pressure level when the engine is operated at realistic load nor a method to check the exhaust sound pressure levels against a general noise limit for categories of road vehicles. It provides the means for detecting exhaust system resonances with the potential to affect both exterior and interior sound quality.This document incorporates certain provisions of ISO 5130:2007 for measuring the sound level of exhaust systems. (See Appendix A.) Prior SAE Standards assumed vehicles could be operated at rated engine speed for the purpose of stationary sound pressure level testing. Technical development of vehicles and engines have changed the operation of many engines and vehicles under stationary conditions. This standard incorporates the changes in exhaust system configuration and the use of engine management and fuel cut-off systems during stationary conditions.

Download or read book Thermal Studies of Diesel Engine Exhaust Systems written by David J. Kapparos and published by . This book was released on 2004 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Comparative Evaluation of Three Alternative Power Cycles for Waste Heat Recovery from the Exhaust of Adiabatic Diesel Engines written by M. Murray Bailey and published by . This book was released on 1985 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book In cylinder Flame Temperature Soot Concentration and Heat Transfer Measurements in a Low heat rejection Diesel Engine written by Mark A. Mueller and published by . This book was released on 1990 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book MEASUREMENT OF FUEL EVAPORATIVE EMISSIONS FROM GASOLINE POWERED PASSENGER CARS AND LIGHT TRUCKS USING THE ENCLOSURE TECHNIQUE written by SAE IC Powertrain Steering Committee and published by . This book was released on 1970 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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: 1A 1 hr soak representing one diurnal cycle in which temperature of fuel in the vehicle's tank is raised from 60 to 84 F. 2A 7 mile run on a chassis dynamometer. 3A 1 hr hot soak immediately following the 7 mile run.The method described in this recommended practice for measuring the weight of fuel vapors emitted during the tests differs from that described in SAE J170. SAE J170 employs activated carbon traps connected to the fuel system at locations where vapors are expected to escape. Vapors from these openings are absorbed by the traps, and the gain in weight of the traps represents the fuel evaporative emissions.The method described in this report 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 systemboth expected and unexpectedare retained in the enclosure, and the increase in hydrocarbon concentration of the atmosphere in the enclosure represents the evaporative emissions. Emission values measured by the enclosure method may, therefore, be significantly different than those obtained by the trap method, depending on fuel system configuration and component design.The test sequence and methods for measuring emissions are applicable to vehicles either with or without systems or devices to control fuel evaporative emissions. Although they have been used successfully with a wide range of vehicles equipped with a variety of control devices, they should not be applied indiscriminately to new or unique vehicles or fuel systems. For example, based on experience that temperature excursions of the fuel tank in parked vehicles follow those of ambient air, the test sequence prescribes heating of the fuel tank to simulate a diurnal soak. Any control system designed to alter the relation between fuel and ambient temperatures will not be properly evaluated in the test sequences prescribed.This SAE Recommended Practice is intended as a guide toward standard practices, but may be subject to frequent change to keep pace with experience and technical advances.The recommended practice includes the following sections: 1. Definitions 2. Test Fuel 3. Test Facilities and Equipment 4. Measurement Method 5. Preparation of Test Vehicle and Fuel System 6. Test Sequence 7. Information and Data to be Recorded 8. Presentation of Data.

Download or read book Measurement of Light Vehicle Exhaust Sound Level Under Stationary Conditions written by Light Vehicle Exterior Sound Level Standards Committee and published by . This book was released on 2007 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This SAE Standard establishes the test procedure, environment, and instrumentation to be used for measuring the exhaust sound level of passenger cars, multipurpose vehicles, and light trucks under stationary conditions. Measurements are taken under steady-state conditions. In this respect, this procedure differs from ISO 5130 which includes measurements under the dynamic conditions of an engine deceleration. This sound level measurement procedure has been developed as a guide for governmental agencies establishing in-service sound level limitations and enforcement measurement procedures. It is directed at the assessment of vehicle exhaust noise and is not intended to determine maximum vehicle sound levels.Technology changes have occurred that make the SAE J1169 procedure inadequate. SAE J1169 is a legacy test that specifies maximum rated engine speed (MRES) as the test condition. Many modern engines will not allow MRES in neutral and/or have fuel cut-off software that prevents the engine from reaching this target. Additionally, the measurement technology of slow exponential time-averaging characteristic is outdated as compared to the fast exponential time averaging characteristic used in SAE J1492. For these and other reasons, J1169 will be cancelled in favor of J1492, which provides a continuous measure of exhaust system sound level over a range of engine speeds.

Download or read book SAE 2007 08 0078 Analysis on the Thermal Stress of Exhaust Manifold in a Heavy Duty Diesel Engine by Conjugate Heat Transfer Method written by Sang-Kyoo Lee and published by . This book was released on 1999 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The exhaust manifold in a heavy-duty diesel engine should be strictly designed on the thermal performance. The current study is to get the temperature distribution and heat transfer coefficients at the walls of the exhaust manifold using a conjugate heat transfer method with the consideration of exhaust gas flow and convective heat transfer. Thermal deformation of the exhaust manifold owing to the thermal stresses is investigated by coupling the temperature distribution into a structural analysis code.

Download or read book SNAP ACCELERATION SMOKE TEST PROCEDURE FOR HEAVY DUTY DIESEL POWERED VEHICLES written by Truck and Bus Powertrain Committee and published by . This book was released on 1996 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This SAE Recommended Practice applies to vehicle exhaust smoke measurements made using the Snap-Acceleration test procedure. Because this is a non-moving vehicle test, this test can be conducted along the roadside, in a truck depot, a vehicle repair facility, or other test facilities. The test is intended to be used on heavy-duty trucks and buses powered by diesel engines. It is designed to be used in conjunction with smokemeters using the light extinction principle of smoke measurement.This procedure describes how the snap-acceleration test is to be performed. It also gives specifications for the smokemeter and other test instrumentation and describes the algorithm for the measurement and quantification of the exhaust smoke produced during the test. Included are discussions of factors which influence snap-acceleration test results and methods to correct for these conditions. Unless otherwise noted, these correction methodologies are to be considered an integral part of the snap-acceleration test procedure.

Download or read book Measurement of Intake Air Or Exhaust Gas Flow of Diesel Engines written by SAE IC Powertrain Steering Committee and published by . This book was released on 1992 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This procedure establishes recommendations on the measurement of diesel engine intake air flow under steady-state test conditions. The measurement methods discussed have been limited to metering systems and associated equipment found in common usage in the industry, specifically, nozzles, laminar flow devices, and vortex shedding. The procedure establishes accuracy goals as well as explains proper usage of equipment. The recommendations concerning diesel engine exhaust mass flow measurements are minimal in scope.

Download or read book INSTRUMENTATION AND TECHNIQUES FOR EXHAUST GAS EMISSIONS MEASUREMENT written by SAE IC Powertrain Steering Committee and published by . This book was released on 1984 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This SAE Recommended Practice establishes uniform laboratory techniques for the continuous and bag-sample measurement of various constituents in the exhaust gas of the gasoline engines installed in passenger cars and light-duty trucks. The report concentrates on the measurement of the following components in exhaust gas: hydrocarbons (HC), carbon monoxide (CO), carbon dioxide (CO2), oxygen (O2), and nitrogen oxides (NOx). NOx is the sum of nitric oxide (NO) and nitrogen dioxide (NO2). Historical techniques still used for some purposes are included in the Appendices. A complete procedure for testing vehicles may be found in SAE Recommended Practice J1094, Constant Volume Sampler System for Exhaust Emissions Measurement.This recommended practice includes the following sections: (1)Introduction (2)Definitions and Terminology (3)Emissions Sampling Systems (4)Emissions Analyzers (5)Data Analysis and Reduction (6)Associated Test Equipment (7)Test Procedures (8)Appendices A, B, and C.

Download or read book Measurement of Fuel Evaporative Emissions from Gasoline Powered Passenger Carsand Light Trucks Using the Enclosure Technique written by SAE IC Powertrain Steering Committee and published by . This book was released on 1982 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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: a. 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 °C (60 to 84 °F)b. A 17.9 km (11.1 mile) drive on a chassis dynamometerc. 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. The test sequence and methods for measuring emissions are applicable to vehicles either with or without systems or devices to control fuel evaporative emissions. Although they have been used successfully with a wide range of vehicles equipped with a variety of control devices, they should not be applied indiscriminately to new or unique vehicles or fuel systems. For example, based on experience that temperature excursions of the fuel tank in parked vehicles follow those of ambient air, the test sequence prescribes heating of the fuel tank to simulate a diurnal soak. Any control system designed to alter the relation between fuel and ambient temperatures will not be properly evaluated in the test sequences prescribed. This document is intended as a guide toward standard.

Download or read book On road Measurement of Light duty Gasoline and Heavy duty Diesel Vehicle Emissions written by Robert A. Harley and published by . This book was released on 2009 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Measurement of Carbon Dioxide Carbon Monoxide and Oxides of Nitrogen in Diesel Exhaust written by SAE IC Powertrain Steering Committee and published by . This book was released on 2002 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The method presented applies to the analysis of the indicated constituents in diesel engine exhaust, or vehicles using diesel engines, when operating at steady-state conditions.The measurements of carbon monoxide, carbon dioxide, and nitric oxide are based on continuous sampling and analysis by nondispersive infrared (NDIR) methods. Measurement of total oxides of nitrogen by chemiluminescence and NDIR methods is discussed.This SAE Recommended Practice provides for the measurement of carbon dioxide, carbon monoxide, and oxides of nitrogen in diesel exhaust.

Download or read book Measurement of Exhaust Emissions from Light Duty Diesel Engined Vehicles written by C. J. Potter and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book In cynlindrical Measurement of Particulate Radiant Heat Transfer in a Direct Injection Diesel Engine written by Franklin John Struwe and published by . This book was released on 2002 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Continuous Hydrocarbon Analysis of Diesel Emissions written by SAE IC Powertrain Steering Committee and published by . This book was released on 1988 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The method presented is the current recommendation for the use of flame ionization detectors to determine the hydrocarbon content of diesel engine exhaust, or exhaust of vehicles using diesel engines, when operating at steady-state. The requirements of the associated sampling system and a general procedure for a continuous measuring method are presented. This SAE Recommended Practice provides for the continuous measurement of the hydrocarbon concentration in diesel exhaust.