Your Selections

Light trucks
Show Only

Collections

File Formats

Content Types

Dates

Sectors

Topics

Authors

Publishers

Affiliations

Committees

Events

Magazine

   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

Develop the Methodology Using DOE Approach to Improve Steering Return Ability of a Vehicle through Virtual Simulation

Mahindra & Mahindra, Ltd.-Nitin Kumar Khanna, Baskar Anthonysamy, Naveen Medithi, Karthik Senthi
  • Technical Paper
  • 2019-28-0012
To be published on 2019-10-11 by SAE International in United States
In driving, Steering is the input motion to the vehicle. The driver uses steering input to change the direction of the vehicle. During Parking or U turn bends the Steering is locked and later released to follow the desired path. Steering return ability is defined as the ratio of difference between steering wheel position at lock condition and steering wheel angle after 3 seconds of release to the steering wheel angle at lock condition. Having proper steering return ability characteristics has an important effect on vehicle steering characteristics. In this study, a full vehicle ADAMS model is prepared, and virtual steering return ability have been simulated in ADAMS/CAR for a Pickup truck vehicle. Simulated responses in the steering wheel angle have been validated by comparison with measurements. A Design of Experiment study is setup and Iterations are carried out to find the effect of Hard points and friction parameters. The effect of different parameters in terms of their importance is plotted and discussed. The objective is to establish the methodology to predict correct steering return…
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.
new

The Normal-Load and Sliding-Speed Dependence of the Coefficient of Friction, and Wear Particle Generation Contributing to Friction: High-Copper and Copper-Free Formulations

Compact International (1994) Co., Ltd.-Meechai Sriwiboon, Nipon Tiempan, Kritsana Kaewlob
SKR Consulting Inc.-Seong K. Rhee
Published 2019-09-15 by SAE International in United States
Automotive brakes operate under varying conditions of speed and deceleration. In other words, the friction material is subjected to a wide range of normal loads and sliding speeds. One widely accepted test procedure to evaluate, compare and screen friction materials is the SAE J2522 Brake Effectiveness test, which requires full-size production brakes to be tested on an inertia brake dynamometer. For the current investigation, disc pads of two types of 10 different formulations (5 high-copper and 5 copper-free formulations) were prepared for testing on a front disc brake suitable for a pickup truck of GVW 3,200 kg. Each pad had 2 vertical slots, and one chamfer on the leading edge and also on the trailing edge of the pad. One segment of the test procedure looks at the coefficient of friction (Mu) under different brake line pressures and different sliding speeds to determine its stability or variability. In all cases, the Mu is found to be dependent on the normal load and sliding speed, contrary to the commonly called “Amontons-Coulomb’s Laws of Friction”. According to…
Annotation ability available
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.
new

Downhill Safety Assistant Driving System for Battery Electric Vehicles on Mountain Roads

Suizhou-WUT Industry Research Institute-Gangfeng Tan
Wuhan University of Technology-Jia'ao Feng, Zhongpeng Tian, Jian Cui, Fangyu Zhou
Published 2019-09-15 by SAE International in United States
When driving in mountainous areas, vehicles often encounter downhill conditions. To ensure safe driving, it is necessary to control the speed of vehicles. For internal combustion engine vehicles, auxiliary brake such as engine brake can be used to alleviate the thermal load caused by the continuous braking of the friction brake. For battery electric vehicles (BEVs), regenerative braking can be used as auxiliary braking to improve brake safety. And through regenerative braking, energy can be partly converted into electrical energy and stored in accumulators (such as power batteries and supercapacitors), thus extending the mileage.However, the driver's line of sight in the mountains is limited, resulting in a certain degree of blindness in driving, so it is impossible to fully guarantee the safety and energy saving of downhill driving. Therefore, taking a pure electric light truck as an example, the system proposed in this paper first analyzes the driver's driving intention, proposes the system startup and exit strategy, and then combines the geographic information system (GIS) mountain road information, downslope speed limit and vehicle parameters, considering…
This content contains downloadable datasets
Annotation ability available
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.
new

Laboratory Speed Test Procedure for Light Truck Tires

Highway Tire Committee
  • Ground Vehicle Standard
  • J1633_201909
  • Current
Published 2019-09-11 by SAE International in United States
This SAE Recommended Practice provides a method for testing the speed performance of light truck tires under controlled conditions in the laboratory on a test wheel.
This content contains downloadable datasets
Annotation ability available
Open Access

Modeling and Optimal Design of All-Wheel-Drive Hybrid Light Trucks

SAE International Journal of Alternative Powertrains

Ford Motor Company, USA-Xiaowu Zhang
Robert Bosch LLC, USA-Nikhil Ravi
  • Journal Article
  • 08-08-01-0003
Published 2019-06-06 by SAE International in United States
Fuel economy and performance are both important in the design of hybrid pickup trucks. All-wheel drive is essential to ensure superior performance compared to two-wheel-drive designs. In this article, as a comprehensive extension work to the article published in ASME Dynamic Systems and Control Conference [1] on all-wheel-drive (AWD) hybrid truck, we investigate the modeling, design, and control problem of AWD hybrid vehicles and develop a methodology to identify optimal designs. This methodology 1) formulates an automated modeling process, 2) searches exhaustively through all possible AWD designs, and 3) employs a near-optimal energy management strategy, to obtain a family of designs with superior performance and fuel economy. A design case study for a hybrid Ford F-150 is conducted, to showcase this design process.
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

Wheels/Rims - Military Vehicles Test Procedures and Performance Requirements

Truck and Bus Wheel Committee
  • Ground Vehicle Standard
  • J1992_201906
  • Current
Published 2019-06-06 by SAE International in United States
This SAE Recommended Practice provides minimum performance requirements and uniform laboratory procedures for fatigue testing of disc wheels, demountable rims, and bolt-together divided wheels intended for normal highway use on military trucks, buses, truck-trailers, and multipurpose vehicles. For other (non-military) wheels and rims intended for normal highway use on trucks and buses, refer to SAE J267. For wheels intended for normal highway and temporary use on passenger cars, light trucks, and multipurpose vehicles, refer to SAE J328. For wheels used on trailers drawn by passenger cars, light trucks, or multipurpose vehicles, refer to SAE J1204. This document does not cover off-highway or other special application wheels and rims.
This content contains downloadable datasets
Annotation ability available
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

Aluminum: Toward 50% body content

Automotive Engineering: May 2019

Lindsay Brooke
  • Magazine Article
  • 19AUTP05_04
Published 2019-05-01 by SAE International in United States

Aluminum BIW and closure parts are the key to achieving both regulatory and OEM goals for improved vehicle efficiency going forward.

To vehicle-development teams, peaceful coexistence is the 2020's way of describing the relationship between steel and aluminum. Sure, the two giant materials industries will continue their battle to conquest one another's market share. But for vehicle planners and program-development teams, the ferrous and light metals are an increasingly effective and popular combination. As experts Dr. Alan Taub and Michael Robinet have noted elsewhere in this issue, the mixed-materials trend is becoming an enduring one, as evidenced across the landscape of recent new-vehicle introductions.

Annotation ability available
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

WHAT WE'RE DRIVING

Automotive Engineering: May 2019

  • Magazine Article
  • 19AUTP05_10
Published 2019-05-01 by SAE International in United States

America needs more midsized pickups. The case for the new Ford Ranger is made by increasingly strong sales of GM's models and the perennial fan base of the Toyota Tacoma and Nissan Frontier. And now Jeep's back in the game. A growing number of U.S. pickup fans want something more parkable and fuel-efficient than the fullsizers.

Annotation ability available
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

Jeep revives its pickup mojo with 2020 Gladiator

Automotive Engineering: May 2019

Bill Visnic
  • Magazine Article
  • 19AUTP05_15
Published 2019-05-01 by SAE International in United States

Get ready for the fractionalization of the U.S.'s raucous pickup-truck market.

Annotation ability available
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

Q&A

Automotive Engineering: May 2019

  • Magazine Article
  • 19AUTP05_17
Published 2019-05-01 by SAE International in United States

The engineering program for the 2020 Jeep Gladiator was managed in the company's dual-responsibility style that seats approximately equal authority in the Chief Engineer and a “Model Responsible” executive/engineer who brings an additional perspective-and responsibilities-to the effort.

Annotation ability available