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Training / Education

Introduction to Commercial and Off-Road Vehicle Cooling Airflow Systems

Vehicle functional requirements, emission regulations, and thermal limits all have a direct impact on the design of a powertrain cooling airflow system. Given the expected increase in emission-related heat rejection, suppliers and vehicle manufacturers must work together as partners in the design, selection, and packaging of cooling system components. An understanding and appreciation of airflow integration issues and vehicle-level trade-offs that effect system performance are important to the team effort. The severe duty cycles, minimal ram air, and sometimes unconventional package layouts present unique challenges.
Training / Education

Fundamentals of Truck and Off-Highway Transmission Systems

This course will develop a basic understanding of the fundamentals of operation and explain the current state-of-the-art design of the modern transmission designs. Transmission systems in current production will be used as a practical example throughout the seminar. Two basic product areas of truck and off-highway transmission systems will be reviewed: Planetary Automatic Transmissions, and Power-Shifted Transmissions. The functional requirements of the "current" market and the operational needs of its drivers will drive the course. Course material will be presented in the chronological order in which it was introduced into the marketplace.
Training / Education

Pathways to Autonomous Trucking

2019-06-20
Vehicle automation and intelligent transportation systems will be the cornerstones of sustainable smart cities of the future. People movers seem to be at the heart of technology development, field trials and on-road testing, and strategic business partnerships when it comes to connectivity and automated driving. Majority of the focus has been on unmanned operation and door-to-door service in urban environments and not on highways. Highways are relatively simpler to handle from an engineering stand-point, but vehicles typically operate at higher speeds, so the cost of accidents is worse.
Standard

A Tilt Table Procedure for Measuring the Static Rollover Threshold for Heavy Trucks

2011-05-17
CURRENT
J2180_201105
The test procedure applies to roll coupled units such as straight trucks, tractor semitrailers, full trailers, B-trains, etc. The test is aimed at evaluating the level of lateral acceleration required to rollover a vehicle or a roll-coupled unit of a vehicle in a steady turning situation. Transient, vibratory, or dynamic rollover situations are not simulated by this test. Furthermore, the accuracy of the test decreases as the tilt angle increases, although this is a small effect at the levels of tilt angle used in testing heavy trucks. The test accuracy is accepted for vehicles that will rollover at lateral acceleration levels below 0.5 g corresponding to a tilt table angle of less than approximately 27 degrees. Even so, the results for heavy trucks with rollover thresholds greater than 0.5 g could be used for comparing their relative static roll stability.
Standard

Wheel Mounting Elements for Industrial and Agricultural Disc Wheels

1986-06-01
HISTORICAL
J714_198606
This SAE Recommended Practice includes wheel mounting elements subject to standardization in a series of industrial and agricultural disc wheels. The disc may be reversible or nonreversible and concave or convex (See Figure 1 and Table 1).
Standard

Braking Performance--Asphalt Pavers

2006-01-04
HISTORICAL
J2118_200601
This SAE Standard specifies brake system performance and test criteria to enable uniform evaluation of the braking capability of self-propelled, rubber-tired asphalt pavers. Service, secondary, and parking brakes are included. Application This document applies to self-propelled, rubber-tired asphalt pavers as defined in 3.1 and to these same machines while in service.
Standard

R134a Refrigerant Charge Determination Test Method

2018-09-11
CURRENT
J3023_201809
The purpose of this document is to establish guidelines for determining the critical R134a refrigerant charge for off-road, self-propelled work machines as defined in SAE J1116 and Agricultural Tractors as defined in ANSI/ASAE S390. It will develop a minimum to maximum refrigerant charge range in which the HVAC system can maintain proper operation. Operating conditions and characteristics of the equipment will influence the optimum charge. Since these conditions and characteristics vary greatly from one application to another, careful consideration should be taken to determine the optimum R134a refrigerant charge for the HVAC system.
Standard

Measurement of Passenger Compartment Refrigerant Concentrations Under System Refrigerant Leakage Conditions

2011-02-04
CURRENT
J2772_201102
This Standard is restricted to refrigeration circuits that provide air-conditioning for the passenger compartments of passenger and commercial vehicles. This Standard includes analytical and physical test procedures to evaluate concentration inside the passenger compartment. In the early phases of vehicle evaluation, usage of the analytical approach may be sufficient without performing physical tests. The physical test procedure involves releasing refrigerant from an external source to a location adjacent to the evaporator core (inside the HVAC-Module). An apparatus is used to provide a repeatable, calibrated leak rate. If the system has multiple evaporators, leakage could be simulated at any of the evaporator locations. This standard gives detail information on the techniques for measuring R-744 [CO2] and R-1234yf [HFO-1234yf], but the general techniques described here can be used for other refrigerants as well.
Standard

Control Locations for Off-Road Work Machines

1982-07-01
J898_198207
This SAE Standard applies to Construction, General Purpose Industrial, Agricultural, Forestry, and Specialized Mining categories of off-road, self-propelled work machines, as defined in SAE J1116. Powered industrial trucks and agricultural equipment, other than the basic agricultural tractor, are excluded from the scope of this document. The document defines positions for convenient placement of hand- and foot-operated controls derived from the overlapping reach capability of large and small operators. The large operator approximates the 95th percentile male, and small operator approximates the 5th percentile female of the U.S. population. This document defines zones in which controls used by a seated operator would ordinarily be placed, and is intended as a guide for the design of the operator compartment controls. Constraints peculiar to individual machine or user applications may require modification to these defined zones.
Standard

Control Locations for Off-Road Work Machines

1987-10-01
J898_198710
This SAE Standard applies to Construction, General Purpose Industrial, Agricultural, Forestry, and Specialized Mining categories of off-road, self-propelled work machines, as defined in SAE J1116. Powered industrial trucks and agricultural equipment, other than the basic agricultural tractor, are excluded from the scope of this document. The document defines positions for convenient placement of hand- and foot-operated controls derived from the overlapping reach capability of large and small operators. The large operator approximates the 95th percentile male, and small operator approximates the 5th percentile female of the U.S. population. This document defines zones in which controls used by a seated operator would ordinarily be placed, and is intended as a guide for the design of the operator compartment controls. Constraints peculiar to individual machine or user applications may require modification to these defined zones.
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