Off-highway hybrids: Opportunities and
With oil prices declining and emissions regulations in North
America 'stabilized,' is there a place for hybrid
powertrains in this new world of cheap oil?
Looking for a better image
Display advances are helping to reduce operator fatigue.
Charging up electrified powertrains
Control technologies race forward while batteries improve and adopt
Measuring and accounting for suspension
TARDEC teamed with SEA Ltd. to develop a system to measure the
suspension parameters, center of gravity, and moments of inertia of
wheeled vehicles in the never ending quest to model and predict
vehicle dynamic behavior.
Looking at mobility in 2050
Cuneyt L. Oge begins his term as 2016 SAE International President
with a vision about the future of auto- and aero-mobility.
Surface Generation speeds composites throughput with
one-shot stamp-forming process
Argonne centers to focus on expediting
commercialization of technology
'Super-precision' cylindrical roller bearings
launched by SKF
Cummins aims to boost heavy-duty diesel efficiency to
Gleaner upgrades cabins, drives on S9 Series
Improving heavy-duty engine component
Cylinder deactivation can improve fuel economy by using a reduced
number of cylinders that operate at higher loads and thermal
efficiency, while other cylinders are turned off, when the engine
operates at partial load conditions. A switching roller finger
follower is one of the technologies that help make it work.
Pumping up hydraulic capabilities
Electrohydraulic advances keep coming as distributed electronics
flex their muscle.
Tracking the trends in commercial vehicle
Industry insiders at Molex offer what they think the future may
hold for heavy-duty components in 24/7 communications systems.
ADAS system validation
It is crucial that different advanced driver assistance systems
functionalities interact seamlessly with existing electronic
control unit (ECU) networks.
Hot-stamping process from Schuler employs flexible
'pressure controlled hardening'
Software's growth shines spotlight on eliminating
Rugged data-acquisition systems speed tests of
The benefits and advantages of digital signal
Evaluating new forestry machines in a fraction of the
HMIs extend beyond the cab
Telematics functions are being integrated into multi-function user
Standards step forward in design of off-highway
Functional safety standards are starting to impact many development
projects, while the auto industry's AUTOSAR standard is being
deployed to help enable software reuse and simplify designs.
Leveraging automotive lightweighting techniques to
improve off-highway emissions
Where systems engineers can gain efficiencies in off-highway
equipment is agnostic, they'll take it anywhere, and so they
should, but one of the ways, often underestimated, is through the
use of strong and lightweight advanced materials.
Waste heat recovery for the long haul
A WHR system based on an organic Rankine cycle has been developed
for a long-haul Iveco Stralis truck.
Making sense of autonomy
Industry offers a range of sensors that will free humans from many
tasks while also improving reliability, though devising strategies
that meet demanding requirements without breaking the bank is no
Life-cycle planning-Design and calibration for ultimate
The ultimate power of Big Data technologies relies on the
implementation of new strategies. Unlike a traditional engine
calibration process, in which only calibration test data and model
simulation data are used, multiple source data introduced into the
adaptive engine calibration process contributes to efficiency and
The complicated future of off-highway
Developing an optimum engine is getting tricky now that the
European Union has established a Stage V for off-highway engines,
and the U.S. has not. What effect will this have on future engine
Combustion modeling in heavy-duty
A focus on the development of a CFD methodology for combustion
simulations took two different approaches to model flame
propagation, both of which employed detailed chemistry and
turbulence chemistry interaction.
Off-highway industry executives from companies such as BorgWarner,
Perkins, Cummins, and Danfoss reflect upon challenges inside, and
outside, the industry, and what technologies, innovations, and
strategies will need to be implemented to thrive into the long-term
16th Annual Product Guide
Top products from throughout the industry covering technologies
such as Powertrain & Energy, Hydraulics, Electronics, and
Testing & Simulation.
Hydraulics still in control of off-highway
Engineers continue to master electronic controllers and software to
help systems manage engine speeds and boost efficiency, to the
ultimate benefit of both OEMs and end-users.
Off-highway calibration challenges-big and
As the final set of Tier 4 regulations kick in for engines greater
than 750 hp (560 kW), calibration efforts must contend with complex
engine and aftertreatment systems. Engine manufacturers and service
providers deal with this complexity, but does it need to be
DEF delivery modelling for SCR systems
Researchers characterize a 0-D model of a urea delivery module,
oriented to model-based control and to the simulation of the system
response to fault injections finalized to diagnosis
Development trends for heavy engines
Downsizing engine displacement, new materials, friction reduction,
and advanced boosting and fuel-injection technologies have
demonstrated potential in light-duty vehicles, and implementation
is under way. FEV experts provide an outlook of how these
technologies can improve the base engine for commercial
applications with regard to future emissions and fuel-efficiency
Rotary SI/CI combustion engines: A thing of the
The internal combustion engine enjoys widespread use as an
inexpensive and reliable power conversion system. While piston
engines date back 150 years, various alternative engine
architectures and cycles have been considered.
Aftertreatment comes with challenging
Diagnosing engine and aftertreatment systems is forcing design
teams to look at new ways to diagnose problems over long vehicle
Taking on NVH reduction techniques
A look at the enhanced durability benefits obtained by changing the
polymer composition, manufacturing methods, and design optimization
of a powertrain mount for an off-highway vehicle.
Making virtual vehicle design a reality
A new virtual design approach for commercial vehicle concepts
allows for purposeful design and integration of new concepts and
technologies on the component level in an existing product
portfolio, while not neglecting the need for standardization and
Calibration and complexity
Off-highway engine applications continue to increase in complexity
to meet emissions regulations and fuel economy targets as well as
to take advantage of advances in electrification and mechatronics.
The model-based calibration process has become the industry
ECU advances take many paths
Controllers are evolving rapidly, with a range of microcontrollers
distributed throughout the vehicle
A new electrohydraulic steering technology that offers energy
efficiency improvement, increased productivity, enhanced safety,
and adaptability to operating conditions also has the capacity to
support remote operation of a compact wheel loader.
Putting lightweighting to the test
Material laws and orientation information are coupled in a single
finite element analysis to predict the performance of the hybrid
composite beam under a dynamic three point bending load.
Screens, cameras provide new look in
Video inputs are another option showing up on displays that
increasingly offer touch control.
Big performance in small packages
By regulating light-duty engine variable speed fans based on heat
rejection demands and ambient temperature, consistent power savings
over the entire operating spectrum can be achieved.
Off-highway engines advance beyond Tier
With Tier 4 Final/Stage IV needs met, engine OEMs direct their
focus and competitive energies toward optimizing competitive
solutions. At the same time, they need to keep a weather eye out
for future regulations, which many expect.
Autonomous vehicle challenges span many
Many of the challenges faced by military and commercial design
teams are similar.
With a quiet cab at the top of many tractor buyers' wish lists,
agricultural equipment manufacturers are pursuing every opportunity
possible to shed decibels.
Off-highway industry executives write about some of the challenges
and trends facing the industry over the next 20 years, and the
innovation that will be required to stay competitive and
Annual product guide
A product roundup showcasing the newest and most innovative
supplier technologies in a variety of areas such as Powertrain
& Energy, Electronics, Hydraulics, Materials, Testing &
Simulation, Body and Chassis, and Interiors.
What's New at ConExpo/IFPE
More new products and technologies that companies plan to showcase
at this year's ConExpo-Con/Agg, which is co-located with the
IFPE fluid-power event in Las Vegas from March 4-8, are
Gearshift actuator dynamics in a dual clutch
The emergence of tougher environmental and fuel efficient
legislations have triggered exploration and advance toward new and
better vehicle transmission technologies.
Software makes solid impact
Programs are helping hydraulic systems do more while reducing
Damping out booming noise
NVH improvement techniques are gaining traction with the goal to
improve the quality perception of off-highway equipment performance
and operator comfort.
What's New at ConExpo/IFPE
A preview of some of the new products and technologies that
companies plan to showcase at this year's ConExpo-Con/Agg,
which is co-located with the IFPE fluid-power event in Las Vegas
from March 4-8.
Injection strategies for improving emissions
Premixed charge compression ignition reduces NOx and soot
emissions, but requires the optimization of the injection timing
and pressure, fuel mass in pilot injection, and EG R rate.
Systems that talk together, are efficient
Design teams take a holistic view, linking engines, transmissions,
hydraulics, and aftertreatment systems to boost efficiency and
Managing the deluge of data
The model-based development (MBD) process has been a key enabler of
technical advancement in the transportation industry; however, the
MBD process leads to the generation of large volumes of data
artifacts and work products. To maintain efficiency while
continuously improving the quality of products, it is necessary to
be able to manage this data in an efficient manner.
A vision for SAE's future
Longtime GM engineering executive and STEM education supporter
Daniel M. Hancock brings a focused approach to his term as SAE