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2023-10-18
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Technical Paper

Toward Sustainable Urban Transportation: Examining the Potential of Transport Departments in Lahore, Pakistan

2023-10-18
2023-01-5074
The lack of institutional capacity and coordination, outdated rules and regulations, poorly perceived implementation of motorization policy, and knee-jerk approaches for transportation planning are the challenges to progress toward sustainable transportation in Lahore, Pakistan. This study evaluates the current potential of transport departments of Lahore, Pakistan toward a sustainable urban transportation system. The Benchmarking and Analytical Hierarchy Process (AHP) approaches have been used to analyze both primary data from the relevant stakeholders through a questionnaire survey and secondary data obtained from the reports (e.g., Barella et al. [1]) and official websites.
Standard

Control Valve Test Procedure

2023-10-18
CURRENT
J747_202310
This SAE Standard applies to hydraulic directional control valves as applied to self-propelled work machines referenced in SAE J1116. It describes a laboratory test procedure for evaluating: a Flow versus pressure drop b Leakage rate c Operating effort d Metering characteristics versus spool travel, pilot pressure, or electrical current e Relief valve characteristics The document applies to single and multiple section hydraulic directional control valves. This document illustrates axial, manually operated valves although the test procedure is applicable to other input forms such as rotary actuation, electric current, hydraulic or pneumatic pressure. Performance characteristics such as metering hysteresis or dynamic response may have a significant effect on some of these tests.
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