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Viewing 1 to 30 of 325
Article
2014-09-16
Steel, aluminum, and plastics are vying for additional assignments as automakers look for ways to lightweight vehicles to meet the U.S. government's 2025-mandated 54.5-mpg fleet average.
Article
2014-07-15
Opel recently broke ground on a €210 million expansion of its Rüsselsheim International Technical Development center (ITDC) that will be used to develop and test engines. The 36,000-m² (400,000-ft²) expansion will be completed in 2017.
Article
2014-07-09
Sixteen university teams from the U.S. and Canada will revamp a Chevrolet Camaro into an energy-efficient, eco-smart muscle car without compromise to the vehicle's performance, utility, and safety.
Article
2014-06-24
General Motors announced Tuesday several personnel changes in leadership. Cathy Clegg was appointed Vice President of North America Manufacturing, effective July 1. Clegg will lead more than 74,000 employees and will be responsible for 55 facilities, including assembly, stamping, powertrain, and component operations in the U.S., Canada, and Mexico.
Article
2014-04-30
In a move to centralize resources for better collaboration between racing and production engineers, General Motors is building the GM Performance and Racing Center (GMPRC) at its Powertrain World Headquarters in Pontiac, MI.
Article
2014-04-22
In part to improve safety performance of its vehicles and to enhance cross-system integration, General Motors is restructuring its global vehicle-engineering organization. It will now consist of two units: Global Product Integrity and Global Vehicle Components and Subsystems.
Article
2014-04-16
In the wake of its ignition switch recall, General Motors CEO Mary Barra has announced creation of a Global Product Integrity organization. Housed within the Global Production Development group, it will "build on the formula and specific actions we have taken in recent years to lead the industry in vehicle dynamics," Barra said at the 2014 New York International Auto Show.
Article
2014-04-14
Adding data buses allows new electronic features, but increases costs from wiring and modules. SAE Congress speakers suggest taking advantage of opportunities to transfer functions and merge modules; and they propose algorithms to give engineers greater choice in circuit routing through harnesses, to replace trial-and-error techniques.
Article
2014-04-09
Misfire detection is most difficult, SAE Congress panel tells attendees, and overall emissions diagnosis is harder than with passenger cars and light-duty trucks.
Article
2014-04-01
Engineering boss Pierpaolo Antonini noted several technology developments that will help maintain the diesel's viability in the face of increasingly stringent global emission regulations.
Article
2014-04-01
IMSA Tudor United SportsCar Championship promotes a variety of green technologies to link racing to the road.
Technical Paper
2014-04-01
Vincenzo Alfieri, Daniel Pachner
Abstract The paper examines how the issue of lengthy development times can be mitigated by adopting a multivariable physics based control method for the development and deployment of complex engine control algorithms required for modern diesel engines equipped with Lean NOx Trap aftertreatment technology. The proposed approach facilitates manufacturers to consider lower cost powertrain configurations for selected markets while maintaining higher performance configurations for other markets. The contribution includes on-engine results from joint work between General Motors and Honeywell. The Honeywell OnRAMP Design Suite which applies model predictive control techniques was used for model identification, control design (using model predictive control) and its calibration. With no prior work on the engine this process of calibrating an engine model and achieving transient drive cycle control on the engine required ten days in the test cell and five days of offline work using the OnRAMP software.
Article
2014-03-20
GM has revealed technical and development details of its all-new Modular Ecotec family of long-stroke 1.0- to 1.5-L three- and four-cylinder gasoline engines that the company expects will eventually power about 25% of the automaker’s global vehicle production in the A through C/D segments.
Article
2014-03-19
Amid its recall of 1.62 million vehicles for faulty ignition switches, linked to 12 fatalities, General Motors Co. on March 18 announced the creation of a new position, Vice President, Global Vehicle Safety.
Article
2014-03-05
Formerly chief of hybrid and electric powertrain engineering, Nitz is now Executive Director, Global Transmissions and Electrification. His new role reflects the evolution of automotive transmission systems as their mechanical and electrical functionality converges.
Article
2014-03-03
Rule mandates lower levels of pollutant emissions from light- and heavy-duty vehicles while also mandating significantly lower levels of sulfur in gasoline to help achieve the emissions reductions.
Article
2014-02-26
Increasing supplies of low-cost, readily available natural gas, along with expanding refueling infrastructure and increasingly strict vehicle emissions requirements, are driving strong growth in the market for light-duty natural gas vehicles (NGVs), Navigant Research says in a recent report.
Article
2014-02-12
The methodology enables material selection and design optimization of energy absorbers for pedestrian protection based on a simple laboratory test and FE model, eliminating the need for extensive vehicle testing.
Article
2014-01-29
The all-new 8L90 was developed in house. GM claims it improves the Corvette’s powertrain efficiency by up to 5% versus the 6L80 and provides faster gear changes. It is over 8 lb (3.6 kg) lighter than the 6-speed while being equivalent in overall size.
Article
2014-01-13
Stiffer-bodied sports car gains wind-aided performance with supercharging and downforce for faster lap times.
Article
2013-12-10
Mary Barra, GM's head of global product development, will be the auto industry's first female CEO—and its ranking female engineer, in January.
Article
2013-12-10
Mary Barra, General Motors Executive Vice President of Global Product Development and Purchasing & Supply Chain, has been elected by the Board of Directors to become the next CEO of the company. She also will also join the GM Board of Directors.
Article
2013-11-21
The Colorado weighs 900 lb less than the full-size Silverado and features a number of significant segment firsts: aluminum hood, active grille shutters to improve highway fuel efficiency, available forward collision-alert, lane-departure warning, and an optional diesel engine.
Article
2013-11-05
An all-carbon-fiber truck bed helps a full-size pickup realize a triple-digit mass reduction in comparison to its production sibling. The Cheyenne is one of 39 vehicles Chevrolet has at the 2013 SEMA Show.
Article
2013-10-18
As the highest-volume car builder in the world, Mattel’s Hot Wheels brand dedicates huge resources to the design of its products. Despite recent advances in digital design tools, these 1/64th-scale replicas of production cars still require the human touch to reach fruition.
Article
2013-10-15
General Motors Co. expects to save $40 million annually in fuel and other logistics expenses with the recent opening of a stamping plant right next to its vehicle assembly plant in Arlington, TX. It joins nine other contiguous GM stamping operations globally that have started production in the past five years.
Technical Paper
2013-10-14
Shailesh Martin Lopes, Pat Geng
Carbon, hydrogen and oxygen are major elements in vehicle fuels. Knowledge of fuels elemental composition is helpful in addressing its performance characteristics. Carbon, hydrogen and oxygen composition is an important parameter in engine calibration affecting vehicle performance, emissions and fuel economy. Biodiesel, a fuel comprised of mono-alkyl esters of long-chain fatty acids also known as Fatty Acid Methyl Esters(FAME), derived from vegetable oils or animal fats, has become an important commercial marketplace automotive fuel in the United States (US) and around the world over last few years. FAME biodiesels have many chemical and physical property differences compared to conventional petroleum based diesel fuels. Also, the properties of biodiesel vary based on the feedstock chosen for biodiesel production. One of the key differences between petroleum diesel fuels and biodiesel is the oxygen content. Typical oxygen content in pure biodiesel (B100) is about 11 weight % while conventional ultra-low sulfur petroleum diesel fuel has negligible oxygen content.
Technical Paper
2013-10-07
Dinecio dos Santos Filho
The increasing demand for energy savings in cars of high production volume, especially those classified as emerging market vehicles, has led the automotive industry to focus on several strategies to achieve higher efficiency levels from their systems and components. One of the most diffuse initiatives is reducing weight through the application of the so-called light alloys. An engine cylinder block can contribute nearly two percent of the vehicle's total mass. Special attention and soon repercussion are given when someone decides to apply a light alloy such as the aluminum to this component. Nonetheless, it is known that peculiarities in terms of physical, chemical and mechanical properties, due to the material nature, associated with regional market characteristics make the initial feasibility analysis study definitely one of the most important stages for the material choice decision. The present review study will address the technical aspects related to the issue of material selection of the four cylinder block engine most commonly used in emerging markets, where cost and fuel efficiency is a primordial need.
Article
2013-10-01
Expanding on a demonstration project in Hawaii, General Motors Co. and the U.S. Army Tank Automotive Research, Development & Engineering Center (TARDEC) will again collaborate on fuel-cell technology under a new cooperative research and development agreement.
Article
2013-09-25
Chemical reaction-based "thermal batteries" could provide HVAC services to lighten the load on electrochemical batteries.
Viewing 1 to 30 of 325

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