Browse Topic: Overdrive transmissions

Items (19)

Autonomous Vehicle Engineering: November 2023

23AVEP1111/09/2023

Editorial Automated driving's continuing mission: One step forward… The Navigator Are robotaxis ready for prime time? AV Simulation Faces a Long and Winding Road There are many divergent-but-related ideas about how best to leverage simulation to 'teach' and test automated vehicles. Global AV simulation experts continue to attack the technology's persistent obstacles. DOT's 'Framework' for AV Development The U.S. Department of Transportation establishes structure to advance collaborative AV testing. The Chaos of Automotive Data Privacy Regulators and other privacy advocates believe vehicle-related data collection and brokering is in overdrive. One expert believes a day of reckoning is coming. Simulation Developer rFpro Mimics Vehicle Sensors 'Ray-tracing' software enables the training of ADAS systems entirely by simulation. Eight of the top 10 OEMs are using it. New Tools & Technologies

Fuel Economy Measurement Road Test Procedure

J1082_202305 (Current)

05/10/2023

This SAE Standard incorporates driving cycles that produce fuel consumption data relating to Urban, Suburban, and Interstate driving patterns and is intended to be used to determine the relative fuel economy among vehicles and driving patterns under warmed-up conditions on test tracks, suitable roads, or chassis dynamometers.1

Light Duty Vehicle Performance and Economy Measure Committee

WHAT WE'RE DRIVING

20AUTP05_0605/01/2020

The aftermarket driven by Jeep Wrangler is reportedly north of $1 billion and I like to think that my dad had something to do with kickstarting that phenomena. After purchasing a new 1947 Willys CJ2A ($1,067!), he began adding accessories that, at the time, were practical rather than fashionable - a front-mounted Koenig PTO winch, a Warn overdrive, extra driving lights and an hydraulic snowplow. Today's Wrangler buyers need only check the boxes - dozens of them - to customize their new steeds “from the factory.” On the heels of last year's launch of the Gladiator pickup body-style, Jeep has added the Mojave moneymaker to the Gladiator lineup for 2020. Although aimed at the “desert runner” vehicle trend, many “Glad Mojaves” will never see a speck of sand. Their owners will nonetheless point to their Jeeps' truly desert-capable hardware - Fox 2.5 Performance suspension dampers, Dana-44 axles with rear locker, 33-inch tires and more skid plates than a Stryker combat vehicle

Comparison of Dynamic Performance and Fuel Consumption of Direct-drive and Overdrive Transmission Tractors

2016-01-8019

09/27/2016

The main objective of this project was to compare the fuel consumption and dynamic performances of direct-drive and overdrive transmission tractors. Fuel consumption was evaluated at constant high speed and on various road profiles, while the dynamic performance was assessed on various road profiles only. The SAE Fuel Consumption Test Procedure (J1526) was used for constant high speed fuel consumption track test evaluations. The direct-drive transmission tractor consumed less than the overdrive transmission tractor, even though it was heavier. The testing on various road profiles was conducted using a towing dynamometer, for comparing the dynamic capability of the tractors when simulating the same towing load on two hilly road profiles: the Townes Pass path (in the Rocky Mountains) and the Saguenay path (in the Saguenay region of Quebec). Each tractor was to haul the set load along the given path while trying to attain 90 km/h speed. Results from the test showed almost identical

Surcel, Marius-Dorin, Bonsi, Adime Kofi

NASA Aircraft Management Information System (NAMIS

TBMG-2201105/01/2015

The NASA Aircraft Management Information System (NAMIS) is an Enterprise Resource Planning/Mission Support software suite designed to meet both the mission support requirements and the business management requirements of NASA Johnson Space Center’s (JSC) Aircraft Operations Division (AOD). The concept and 11 high-level requirements were conceived in 1996. NAMIS was then developed over a period of 12 years in a series of modular, integrated components designed to meet those 11 requirements. The requirements were adopted by NASA’s Intercenter Aircraft Operations Panel (IAOP) in March 2003 as the basis for defining a common aircraft management solution for use at all NASA centers to replace both legacy systems and paper-based systems with one integrated software solution to track aircraft-related activities for NASA

Big losers

11AEID0419_0104/19/2011

Heavy trucks increasingly employ lighter-weight materials and sleeker shapes-not just for body but major chassis components as well-to trim fuel consumption and emissions. It should come as no big surprise that the “heavy hitter” in boosting heavy-vehicle fuel efficiency is the hybrid powertrain, be it the electric or hydraulic variety. But, as many industry experts will tell you, hybridization does not benefit all medium- and heavy-duty vehicles equally. “There are technologies out there today and expected in the next five years that can help achieve what the president [Barack Obama] said was a 25% fuel-consumption reduction. That's his aim; I think it's achievable,” said Dr. Andrew Brown Jr., Executive Director and Chief Technologist for Delphi Corp. These technologies include hybrid powertrains, clean diesel technology, improved aerodynamics, low rolling resistance tires, and lightweight designs

Gehm, Ryan

Fuel Economy Measurement Road Test Procedure

J1082_200802 (Historical)

02/18/2008

Light Duty Vehicle Performance and Economy Measure Committee

Fuel Economy Measurement Road Test Procedure

J1082_200210 (Historical)

10/25/2002

Light Duty Vehicle Performance and Economy Measure Committee

Manual Transmission Shift Patterns

J1608_200109 (Historical)

09/07/2001

Provide standard shift pattern guidelines for manual transmission shift controls in light, medium, and heavy trucks and buses

Truck and Bus Powertrain Committee

Automatic Transmissions—Manual Control Sequence

J915_200011 (Historical)

11/02/2000

The scope and purpose of this SAE Recommended Practice is to provide a standard pattern or sequence for the manual control of automatic transmissions in passenger cars and light-duty trucks

Automatic Transmission and Transaxle Committee

FUEL ECONOMY MEASUREMENT ROAD TEST PROCEDURE

J1082_199506 (Historical)

06/01/1995

Light Duty Vehicle Performance and Economy Measure Committee

AUTOMATIC TRANSMISSIONS—MANUAL CONTROL SEQUENCE

J915_199304 (Historical)

04/01/1993

The scope and purpose of this SAE Recommended Practice is to provide a standard pattern or sequence for the manual control of automatic transmissions in passenger cars and light-duty trucks

Automatic Transmission and Transaxle Committee

Results of a 500,000-Mile Field Test of a Gear Lubricant and an Engine Lubricant in Heavy-Duty Manual Transmissions

91240810/01/1991

A GL-5 gear lubricant containing a dispersed solid borate additive and a CD synthetic engine lubricant were evaluated in the overdrive transmissions of 17 new Class 8 trucks in a 500,000-mile per truck, on-highway field test. With 500,000-mile oil drain intervals, both lubricants gave acceptable performance as judged by end-of-test inspections: deposit/sludge formation was minimal, overall wear was low, and seal/yoke performance was good. The borate lubricant gave a statistically significant lower wear rate than the synthetic lubricant based upon oil sample analysis; inspections also showed lower wear on some parts. Additionally, oil sample analysis from the tandem drive axles showed that the forward axle gave a statistically significant higher wear rate than the rear axle. Transmission and drive axle oil temperatures were monitored during a portion of the test

Salentine, C. G.

New Ten Speed Transmissions Add Unique Features

90227710/01/1990

Two new ten-speed transmission models have been developed to serve the latest trends in the on-highway heavy duty truck market. These new transmissions combine the Eaton® Fuller® Twin Countershaft design with unique features that improve driver ease and transmission performance. Both models are rated with a torque capacity of 1450 lb-ft (200 kgm). One model is an overdrive transmission having a model designation of RTLO-14610A. The second is a direct and overdrive version having model designations of RT-14710B and RTX-14710B. In this paper, this model is identified as the RT/RTX-14710B

Riley, Thomas N., Samuelson, Eric A., Schmidt, Elizabeth M.

FUEL ECONOMY MEASUREMENT ROAD TEST PROCEDURE

J1082_198901 (Historical)

01/01/1989

This procedure incorporates driving cycles that produce fuel consumption data relating to Urban, Suburban, and Interstate driving patterns and is intended to be used to determine the relative fuel economy among vehicles and driving patterns under warmed-up conditions on test tracks, suitable roads or chassis dynamometers.1 The urban driving cycle forms the basis of a Cold-Start Test Procedure described in SAE J1256

Light Duty Vehicle Performance and Economy Measure Committee

AUTOMATIC TRANSMISSIONS-MANUAL CONTROL SEQUENCE

J915_198812 (Historical)

12/01/1988

Automatic Transmission and Transaxle Committee

FUEL ECONOMY MEASUREMENT—ROAD TEST PROCEDURE

J1082B_197901 (Historical)

01/01/1979

This procedure incorporates driving cycles that produce fuel consumption data relating to Urban, Suburban, and Interstate driving patterns. The procedure is intended to be used to determine the relative fuel economy among vehicles and driving patterns under warmed-up conditions on a test track or on suitable roads. The urban driving cycle forms the basis of a Cold-Start Test Procedure described in SAE Recommended Practice SAE J1256

Light Duty Vehicle Performance and Economy Measure Committee

AUTOMOTIVE TRANSMISSION TERMINOLOGY

J645C_197810 (Historical)

10/01/1978

Automatic Transmission and Transaxle Committee

FUEL ECONOMY MEASUREMENT—ROAD TEST PROCEDURE

J1082A_197703 (Historical)

03/01/1977

Light Duty Vehicle Performance and Economy Measure Committee

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