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CHANGE IS AFOOT

SAE Truck & Off-Highway Engineering: August 2019

Ryan Gehm
  • Magazine Article
  • 19TOFHP08_05
Published 2019-08-01 by SAE International in United States

Cummins and its CTO help focus the 2019 SAE COMVEC on the fast-shifting technology landscape that faces both on- and off-highway sectors.

Jennifer Rumsey has been a member of SAE International her entire career and has participated in the organization's COMVEC event as an attendee and occasional panelist for well over a decade. Now, as Vice President and Chief Technical Officer at Cummins Inc., her role in the annual affair has been elevated, providing executive leadership for this year's programming and presenting an opening-day keynote presentation, along with her Cummins colleague Rich Freeland, President and Chief Operations Officer.

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Steering for Off-Road, Rubber-Tired Machines

OPTC1, Personnel Protection (General)
  • Ground Vehicle Standard
  • J1511_201907
  • Current
Published 2019-07-29 by SAE International in United States

This SAE Standard applies to off-road rubber-tired machines having rated speed capability exceeding 20 km/h.

 

SAE Truck & Off-Highway Engineering: June 2019

  • Magazine Issue
  • 19TOFHP06
Published 2019-06-01 by SAE International in United States
Bullish on biomethane The CEO of CNH Industrial says biomethane is cleaner path than electric, as Case demos the alt fuel in cool wheel-loader concept.Unique hybrids required Power systems expert at Perkins stresses that on-highway electric solutions cannot be directly applied to the more-rugged and varied applications in off-highway.Getting driverless trucks onto roadways Autonomous developers at TuSimple address many technical issues, but they also must consider regulations and operating modes.Stronger, quieter cabs Worthington expert sees AHSS and active noise cancellation making off-highway cabs safer and less-stressful places to work.Hydrogen boom! Nikola reveals Two and Tre fuel-cell trucks and its H2 fueling roadmap, as well as battery-electric military and powersports vehicles.Rearview cameras come into sight Momentum is building behind replacing mirrors with camera monitor systems as the technology edges closer to regulatory approval.Supplier Directory Complete listing of industry suppliers categorized by technology area.Editorial Diesel's doing just fine, thank you.Achieving better power management by optimizing thermal managementSecurity, bandwidth drive over-the-air developmentSAE launches Office of AutomationCleaner Trucks Initiative starts NOx-reduction journeyJCB adds three new X Series crawler excavatorsToyota's…
 

Electrical Charging Systems for Off-Road Work Machines

CTTC C2, Electrical Components and Systems
  • Ground Vehicle Standard
  • J180_201905
  • Current
Published 2019-05-10 by SAE International in United States

This SAE standard describes alternator physical, performance, and application requirements for heavy-duty electrical charging systems for off-road work machines, including those defined in SAE J1116.

 

Product Identification Numbering System of Off-Road Work Machines

MTC1, Loaders, Crawlers, Scrapers and Mounted Attachments
  • Ground Vehicle Standard
  • J1360_201905
  • Current
Published 2019-05-10 by SAE International in United States

This standard covers self-propelled off-road work machines as categorized in SAE J1116 and Agricultural Tractors as defined in ANSI/ASAE S390.

 

SAE Truck & Off-Highway Engineering: April 2019

  • Magazine Issue
  • 19TOFHP04
Published 2019-04-04 by SAE International in United States
Connections dig deeper More aspects of vehicle operation are being improved by leveraging cellular links.An OBE for the SAE Meet Paul Mascarenas-SAE International's 2019 president. He's a staunch advocate for professional development for engineers, amid the mobility industry's transformation.Advancing aftertreatment Engineers push for more efficient, cost-effective, and smaller aftertreatment systems for off-highway diesel engines, addressing challenges such as better particulate filtering and low-temp NOx conversion.Developing for defense Suppliers to the commercial vehicle segment optimize-read: ruggedize-their product offerings for the tougher terrain encountered by military vehicles.Going digital & electric @ bauma 2019 Digitalization and electrification are dominant themes in the equipment and technology being revealed at this year's largest trade show for construction and mining.Editorial Bigger barrier to CBEVs: Batteries or infrastructure?MELD exploits plastic deformation of metals with non-melt AM processStreamlined HMIs do more with lessGasoline fuels growing number of commercial vehiclesAI, standards are transforming military boards and modulesFord develops F-600 chassis truck to hit 'sweet spot'2019 Ram Chassis Cab: More capability, more driver-assist techQ&A Freudenberg CEO Claus Moehlenkamp turns focus to batteries, fuel-cell stacks
 

Off-Road Rim Maintenance Procedures and Service Precautions, Diameter Code 20 and Larger

MTC8, Tire and Rim
  • Ground Vehicle Standard
  • J1337_201902
  • Current
Published 2019-02-21 by SAE International in United States

This SAE Recommended Practice covers the important fundamental maintenance and service precautions for all off-road single-piece and multi-piece rims. Detailed information on specific procedures concerning mounting, demounting, maintenance, and service of a particular type, style, or design of off-road rim assembly can be obtained by consulting rim or tire manufacturers or distributors. These procedures and service precautions should be considered in preparation of the machine service manual, the operator's manual, and workplace procedures.

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Agricultural and Forestry Off-Road Machinery Control and Communication Network

Truck Bus Control and Communications Network Committee
  • Ground Vehicle Standard
  • J1939/2_201901
  • Current
Published 2019-01-14 by SAE International in United States
SAE J1939-2 specifies the requirements for application of SAE J1939 in agricultural and forestry equipment. This document specifies the series of documents within the set of SAE J1939 documents that are applicable to agricultural and forestry equipment and provides further requirements for this industry. The SAE and ISO groups have cooperated to define agricultural and forestry networks in a manner to allow compatibility of ECUs and messaging protocols between the A&F and the T&B networks.
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Fan Guard for Off-Road Machines

OPTC1, Personnel Protection (General)
  • Ground Vehicle Standard
  • J1308_201901
  • Current
Published 2019-01-10 by SAE International in United States
This practice applies to guarding of engine cooling fans used on Off-Road Self-Propelled Work Machines defined in SAE J1116. It does not include guarding for belts, pulleys, or other rotating equipment used on these machines.
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Steering Control of the Off-Highway Vehicles

IIT Bombay-Srikant Sukumar
John Deere India Pvt Ltd-Bharat Joshi, Vinit Jawale, Ojas Patil
Published 2019-01-09 by SAE International in United States
Steering is integral system of any vehicle to achieve direction control. With driver’s inputs, as steering wheel is turned, the steering mechanism is operated to turn the road wheels to route the vehicle on desired path. This Paper studies the different steering architectures and the learning is applied to improve the off-highway vehicles’ steering control. Off-Highway vehicles have traditionally been using Hydrostatic Power Steering (HPS) mechanism with no feedback controls. This mechanism consists of inherent limitations to vehicle efficiency, reliability and control preciseness. In this paper, HPS is modeled using 1D simulation tools from the system parameters and derived equations. The results are plotted and discussed to acknowledge the merits and demerits of existing system which helped in proposing the alternate steering solution. Different steering architectures are evaluated and trade-off study performed to choose the Electro-Hydraulic Power Steering (EHPS) architecture. The mathematical equations behind the Electro-Hydraulic steering system are derived and couple of control strategies (like PID controller and state-feedback controller) are applied to minimize the error between commanded and actual road wheel angle. Non-linear…
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