This SAE Recommended Practice establishes methods to determine grade parking performance with respect to: a. Ability of the parking brake system to lock the braked wheels. b. The trailer holding or sliding on the grade, fully loaded or unloaded. c. Applied manual effort. d. Unburnished or burnished brake lining friction conditions. e. Down and up grade directions. Purpose This document establishes a uniform procedure for determining the parking performance on a grade of any new trailer with manufacturer's maximum weight rating of more than 4540 kg (10 000 lb) intended for roadway use.
This SAE Information Report will provide a uniform arrangement with which to evaluate the concept of high-mounted lamps on large vehicles. The report provides test procedures, requirements, and guidelines for high-mounted stop lamps intended for use on certain vehicles 2032 mm (80 in) or more in overall width. This information report applies to trucks, motor coaches, closed and open top van trailers and other vehicles with permanent structures greater than 2.8 m high. They are not intended for use on school buses, truck tractors, flat bed, pole, and boat trailers and all other trailers or trucks/truck bodies whose permanent structures are less than 2.8 m (approximately 112 in) high. These lamps are for the purpose of providing a signal over intervening vehicles to following drivers. Additionally, four widely spaced lamps will make a more conspicuous stop lamp pattern, thus making it easier to identify a large vehicle as slowing or stopping when approaching it from the rear.
This SAE Recommended Practice contains a series of test methods for use in measuring the viscosity of automotive-type adhesives, sealers, and deadeners. The test methods which are contained in this document are as follows: Brookfield Method; Castor-Severs Rheometer or Pressure Flowmeter; Penetrometer, Capillary Rheometer and Plate Rheometers.
The information in this SAE Recommended Practice has been compiled by Technical Committee 1 (Engine Lubricants) of the SAE Fuels and Lubricants Division. The intent is to provide those concerned with the design and maintenance of two-stroke-cycle engines with a better understanding of the properties of two-stroke-cycle lubricants. Reference is also made to test procedures which may be used to measure the chemical and physical characteristics of these lubricants.
This SAE Standard covers four types of hose for use with automatic transmission fluid: A, B, AT, and BT. Type A and Type B are for use within a temperature range of -40 to 125 degrees C (-40 to 257 degrees F) while types AT and BT are for use within a temperature range of -40 to 150 degrees C (-40 to 302 degrees F). Recommended maximum operating pressure for Type A and Type AT hose is 1.7 MPa (250 psi) while recommended maximum operating pressure for Type B and Type BT hose is 1.0 MPa (150 psi). The lower pressure (Types B and BT) hose is for auxiliary cooler applications only. The reference fluid for tests requiring the use of automatic transmission fluid shall be Dexron-II E/Mercon or equivalent.
The heating value or heat of combustion is a measure of the energy available from the fuel. The fraction or percentage of the heat of combustion that is converted to useful work is a measure of the thermal efficiency of an engine. Thus, a knowledge of the heat of combustion of the fuel is basic to the engineering of automotive engines. This SAE Information Report provides information on the standardized procedures for determining the heat of combustion of fuels that may be used for automotive engines. The changes to SAE J1498 include: SAE Publications - Added SAE Paper 2010-01-1517 Other Publications and Sections 5, 9, and 10 - Updated ASTM alphanumeric designations and titles. Section 10 - Added discussion of a method to calculate net heating value for gasoline-ethanol blends using ASTM D3338.
This procedure is a modification of the urban driving cycles noted in SAE J1082 and which is run on a suitable road or test track. The procedure yields cold start/warm-up fuel economy values indicative of consumer level at the ambient condition of the test. Within referenced limitations, the procedure can be utilized to determine the fuel economy differential among vehicles or between vehicle changes. Purpose This SAE Recommended Practice provides a uniform test procedure for measuring the fuel economy of light-duty vehicles during cold start and warm-up operation (motor vehicles designed primarily for transportation of persons or property and rated at 4500 kg GVW (10 000 lb) or less) on suitable roads.
This glossary has been compiled to serve for reference in an effort to assist communications between the automotive engineer and the electronics engineer. This Glossary confines its content to the specific field of electronic systems and subsystems as they pertain to the automotive engineer.