This SAE Recommended Practice covers the safety alert symbol intended for use on construction and industrial equipment as defined in SAE J1116 and on agricultural tractors and machinery as defined in ASABE S390.

HFTC2, Machine Displays and Symbols

Reduction of Aeroacoustics Tonal Noise for a Tractor Cooling Fan

2021-26-029909/22/2021

Currently, noise pollution has become one of the major environmental concerns. To address this, new noise standards and regulations are being introduced and mandate the tractor OEM's to meet the defined noise levels. Fan noise from the cooling fan is one of the key contributors to the overall vehicle noise. Hence, the reduction of fan noise at the source is a very important and critical task. Even though fan noise is broadband in nature its aerodynamic noise sources are most dominant at the higher harmonics of the blade pass frequency (BPF). Aerodynamic noise of a fan can be varied by changing the fan geometry viz. blade profile, fan width & diameter, no. of blades, and ring on its periphery. Cooling fan is an important component of the cooling system which ensures adequate airflow for radiator cooling and avoids engine overheating with uniform heat dissipation. The important parameters that need to be considered while designing a cooling fan are noise level, airflow, and power

Avinash, D., Shankar, M, Maller, Rathish, V, Ravindran

Design and Development Methodology of Automatic Electric Start System for Power Tiller

2021-26-009309/22/2021

This paper deals with designing and development methodology of Automatic Electric Start (AES) system for power tiller which has horizontal diesel engine as prime mover. Designing of AES system constitutes of designing of Starter Motor, Starter Motor Bracket, Flywheel Ring Gear, Battery, Electrical Circuit, Fan Alternator and then development these components as integrated system prototype. Unlikely tractor market, AES system are not so common in Indian power tiller market therefore, unprecedented design approach towards design of AES system on power tiller engine has been presented in this paper. An engine without AES system requires of huge amount of engine starting effort by farmer whereby farmers fatigue levels are always on higher side. AES system on power tiller has made 0 N force requirement to start engine which was approximately 92 N earlier. Design of AES system depends on analysis engine cranking torque, which is a complex process and involves calculation of moments, such as

singh, sahildeep, sakthiendran, s, kanase, kedar

Virtual simulation method to predict farm tractor durability load cycles for proving ground tests

2021-26-009709/22/2021

Agriculture machinery industries have always relied on conventional product development process such as laboratory tests, accelerated durability track tests and field tests. Now a days the competitive nature seen in industry concerns need to enhance product quality, time to market and development cost. Utilization of computer aided engineering (CAE) methods not only provide solution but also could play key role in tractor development process. The objective is to assess the performance of virtual simulation model of mid segment farm tractor using Multibody System Model (MBS) for predicting the durability loads on virtual proving ground test tracks. Multibody simulation software MSC ADAMS is used to develop a virtual tractor model. Durability test tracks and simulation is carried out as per company testing standards. Data measurement is done using Wheel force Transducer (WFT) to study front and rear spindle forces and moments to evaluate the virtual model performance. Spindle vertical

Subbaiyan, Prasanna Balaji, N, Balaramakrishna, Londhe, Abhijit, Redkar, Dinesh, Arun, G

Reduced Heat Leakage Improves Wearable Health Device

TBMG-3961708/01/2021

Researchers have enhanced a flexible body heat harvester by preventing heat leakage. The harvesters use heat energy from the human body to power wearable technologies. The technology relies on the same principles governing rigid thermoelectric harvesters that convert heat to electrical energy.

SAE TOMORROW TODAY: Cummins Innovating Engines to Power the Global Food Economy

1315407/16/2021

Whether it's gas, electric or hydrogen-fueled, engines serving the agriculture industry are dynamic. Cummins engines power everything from the farm to the field to the future. Ann Schmelzer, General Manager, Global Ag Business for Cummins, is passionate about problem solving through the lens of technology. Building on Cummins' reputation of reliability, Schmelzer is leading the charge to get their engines into the growing demand of autonomous agriculture. Listen as she shares insights on the current economics of agriculture and ways Cummins is stepping up to meet the needs of the global food economy.

Hineman, Marcie

Application Layer - Generator Sets and Industrial

J1939/75_202107 (Current)07/15/2021

SAE J1939-75 defines the set of data parameters (SPs) and messages (PGs) for information predominantly associated with monitoring and control generators and driven equipment in electric power generation and industrial applications. The data parameters (SPs) and messages (PGs) previously published within this document are published in SAE J1939DA. Applications using the SAE J1939-75 document must refer to SAE J1939DA for the SAE J1939 parameters and messages for monitoring and controlling the power units, e.g., engines and turbines, that power the generators and driven industrial equipment.

Truck Bus Control and Communications Network Committee

SAE TOMORROW TODAY: John Deere Brings Precision to Agriculture Through StarFire Network

1312906/04/2021

John Deere has been both a benchmark and a thought-leader in agricultural innovation throughout its 180-year history. Today, Deere's StarFire Network global-positioning system achieves down-to-the-centimeter position accuracy to keep farmers on the cutting-edge. On this episode, Al Savage, StarFire Network Manager, discusses the applications of StarFire technology from precision planting to integrations with autonomous machinery.

Hineman, Marcie

SAE TOMORROW TODAY: Bear Flag Robotics, Helping Farmers Improve Sustainability

1300804/06/2021

Sustainable farming is within reach and Bear Flag Robotics is part of the collage of technology that's making it happen. On the latest episode, we spoke with Igino Cafiero and Aubrey Donnellan, Founders of Bear Flag Robotics, to discuss how the unique business model enables business and farming success. From their days at Carnegie Mellon to the present, the unique perspectives of Cafiero and Donnellan have helped build the Bear Flag Robotics business on diversity of thought, transparency and trust. Discover how they bring these same ideals to business relationships with farmers and how Bear Flag's technology plays a role in safety, productivity and sustainability.

Hineman, Marcie

New Holland extends ag lineup with CH7.70 combine, T6 ‘multitasker’ tractor

SAE-MA-0459703/12/2021

The full-line brand targets “harvesting supremacy” with the debut of a new Crossover Harvesting technology that increases throughput.

Gehm, Ryan

Felling Head Terminology and Nomenclature

J1272_202103 (Current)

03/01/2021

This SAE Standard is intended to describe the basic types of felling heads, including those with bunching capabilities, that are attachments to a self-propelled machine. Only the major components that are necessary to describe the functions of the felling head, and to apply the principles of the standard are included. Illustrations used are not intended to include all existing felling heads or to describe any particular manufacturer’s variation.

MTC4, Forestry and Logging Equipment

CES 2021: Deere demos tractor, high-precision planter via virtual reality

21TOFHP02_0902/01/2021

Digital technology is rapidly transforming off-highway equipment, giving users more functionality and higher precision than is possible with human operators. John Deere highlighted its advanced electronic skills during the virtual CES 2021 conference in January by giving remote booth attendees virtual reality (VR) headsets that demonstrated its technical prowess. Deere highlighted its ExactEmerge planter technology and its 8RX track-type tractor during the virtual trade show. The two can be paired to boost yields, letting operators plant seeds with high precision even while running at 10 mph (16 km/h), double the rate possible with earlier generations.

Costlow, Terry

Q&A

21TOFHP02_1102/01/2021

Commercial vehicles run under a wide range of operating conditions and duty cycles - not all are well-suited for battery-electric propulsion, particularly in the near term. For those hard-to-electrify vehicles, renewable diesel is a viable option to reduce greenhouse-gas emissions “practically overnight,” according to Matt Leuck, technical manager for Renewable Road Transportation in North America for Neste, which claims to be the world's largest producer of renewable diesel and jet fuel. Preparing to participate in the “Low/Zero Carbon Fuels” technical session during the SAE Government/Industry Digital Summit on February 2-3, Leuck said that Neste sees strong, sustained growth for renewable diesel in medium- and heavy-duty road vehicles, as well as in other segments such as mobile machines used at mines and construction sites. “In fact, demand growth has the potential to increase fivefold in the decades ahead,” he shared. “This growth is driven by two key things: end-users are setting

Gehm, Ryan

EDITORIAL: State of the industry: ubiquitous broadband is key

21TOFHP02_0402/01/2021

Bipartisanship and infrastructure: More of the former will (hopefully) help secure more of the latter. That sums up a recurrent theme during the Association of Equipment Manufacturers' (AEM) mid-January media call to discuss the 2020 elections and what the results mean for the $288 billion equipment manufacturing industry in 2021. Top of the list for the industry's policy priorities is infrastructure. “Passing policies that modernize U.S. infrastructure will allow our nation to address the 21st century global economy, and that's through further investments in our nation's roads, highways, bridges, rails, ports, airports and also to deliver broadband access through all of America,” said AEM president Dennis Slater.

Gehm, Ryan

RIDING ON AIR: Activated carbon aims at autos

21AUTP02_0302/01/2021

An old piece of science is set to bring new applications across the mobility spectrum. Activated carbon may seem an esoteric piece of science in the automotive space, but it is quietly playing a key role in Audi A6 and A7 air-suspension systems. The technology also is promising for new applications in vehicle safety, comfort and acoustics. Carbon Air, a company spun off from a U.K. university, is developing activated carbon for use in cars, light trucks, heavy commercial vehicles, buses, motorcycles and even mountain bikes. The technology, which is based on activated charcoal, has long been used in other industry sectors including medical, agricultural, water treatment and food production. Its opportunities in mobility appear to be equally broad, the company noted.

Birch, Stuart

Monarch's automated, electric tractor ready for 2021 deliveries

21TOFHP02_1002/01/2021

“If you want to fundamentally improve your economics,” said Monarch Tractor co-founder and CTO Zachary Omohundro to farmers and growers everywhere, “you go electric.” During a webcast with SAE International's Southern California Section featuring his startup company's battery-electric compact tractor, Omohundro offered markedly reduced operational costs as only one of many reasons for using the Monarch tractor, for which he said deliveries will start this fall for the “several hundred working farms” that have reserved the tractor that starts at $50,000.

Visnic, Bill

Aircraft Thermal Heat Conduction Method

TBMG-3819812/01/2020

An aircraft thermal management technology using one-way heat transfer of planar bridging-droplet thermal diodes was developed for use with electronics, aircraft, and spacecraft. Diodes are a special kind of device that allow heat to conduct in only one direction by use of engineered materials. For management of heat, diodes are attractive because they enable the dumping of heat entering one side, while resisting heat on the opposite side. In the case of aircraft, heat is absorbed from an overheated plane but resisted from the outside environment.

Autonomy kicks up some dust

20TOFHP12_0212/01/2020

Machines that move, haul and plow earth can capitalize on autonomous systems today via increased safety and productivity in the field and significant cost savings. Autonomous operation for on-highway commercial vehicles has grabbed headlines and public attention, rightfully so since these haulers increasingly will share the roads with passenger vehicles. But there is a lot of interesting new core work occurring in the off-highway autonomy space as well, according to Brendan Chan, chief engineer of unmanned systems and active safety at Oshkosh Corp. “There's the hub-to-hub stuff that everyone's been talking about.

Gehm, Ryan

Nomenclature - Industrial and Agricultural Mowers

J990_202011 (Current)

11/03/2020

Illustrations used here are not intended to include all existing industrial or agricultural machines, or to be exactly descriptive of any particular machine. They have been picked to describe the principles to be used in applying this standard.

OPTC1, Personnel Protection (General)

Autonomy Takes Off-highway

20AVEP11_0611/01/2020

Integrating automation systems in mining, agricultural and construction machines can increase safety and productivity in the field and bring significant economic benefits. Autonomous operation for on-highway commercial vehicles has grabbed headlines and public attention, rightfully so since these haulers increasingly will share the roads with passenger vehicles. But there is a lot of interesting new core work occurring in the off-highway autonomy space as well, according to Brendan Chan, chief engineer of unmanned systems and active safety at Oshkosh Corp. “There's the hub-to-hub stuff that everyone's been talking about. There's also a lot of geofence, low-speed applications where autonomy could be very useful and a very good value,” Chan said at the 2020 SAE COMVEC Digital Summit. Vehicles for yard maneuvering is one such application.

Gehm, Ryan

Fuel Consumption Test Procedure - Type II

J1321_202010 (Current)

10/20/2020

This document describes a rigorous-engineering fuel-consumption test procedure that utilizes industry accepted data collection and statistical analysis methods to determine the change in fuel consumption for individual trucks and buses with GVWR of more than 10000 pounds. The test procedure may be conducted on a test track or on a public road under controlled conditions and supported by extensive data collection and data analysis constraints. The on-road test procedure is offered as a lower cost alternative to on-track testing, but the user is cautioned that on-road test may result in lower resolution (or precision) data due to a lack of control over the test environment. Test results that do not rigorously follow the method described herein are not intended for public use and dissemination and shall not be represented as an SAE J1321-Type II test result.

Truck and Bus Aerodynamics and Fuel Economy Committee