U.S.A.:Engine power tests will change:New standard to make claims more accurate - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars
LinkBack Thread Tools Display Modes
post #1 of 1 (permalink) Old 10-21-03, 07:34 AM Thread Starter
Registered User
Stacy94PGT's Avatar
Join Date: Feb 2001
Location: The Hills of North Georgia,USA
Posts: 7,859
U.S.A.:Engine power tests will change:New standard to make claims more accurate

October 21, 2003

Car owners may soon gain more confidence in the horsepower that automakers claim for their vehicles.

A group of engineers is developing a new standard to verify automakers' claims for the power their engines develop.

In the recent past, automakers from Jaguar to Hyundai have admitted they advertised unrealistically high output numbers for their cars.

"Horsepower numbers are absolutely important to our readers," said Frank Markus, technical director of Car and Driver magazine. "It's one of the most crucial numbers. It's how we tell them why one car is better than another."

The Society of Automotive Engineers is revising its standard for measuring horsepower and will suggest automakers have an independent observer to verify the numbers they claim for horsepower and torque, said David Landcaster, General Motors Corp. engineering group manager and chairman of the SAE committee developing the new standard.

One horsepower is the amount of force necessary to lift 550 pounds 1 foot in 1 second. SAE has developed standards for everything from motor oil to vehicle electronics.

The new standard will also set a procedure for how to test torque, the other main force automakers advertise.

Torque measures the turning force generated at the wheels. While high horsepower numbers generally equate to higher top speeds, torque determines a vehicle's acceleration and ability to pull heavy loads.

"Companies have always been able to claim whatever horsepower they wanted," Markus said. "Adding some accountability for the numbers would be a good thing."

Car and Driver caught Jaguar claiming 10 more horsepower than its high-performance S-type R model actually developed a couple of years ago. The automaker then revealed it used a test procedure that gave it higher numbers than what is generally accepted by engineers.

Automakers can test for horsepower and torque in a variety of ways ranging from testing an engine sitting on a bench to evaluating the actual power transmitted to a vehicle's wheels.

Ford and Mazda have also had to lower the horsepower they claimed some of their cars produced.

"It makes you suspicious when a car claims more horsepower but has less performance," Markus said. "Some companies go with the number they like, especially when it gives them a nice round number like 400 horsepower."

The current test, which was last revised in 1970, allows automakers to claim horsepower and torque figures higher than what most owners will actually experience, Landcaster said.

Ford, GM and DaimlerChrysler support the idea of a new independently verified horsepower test.

The new standard should be written by the end of the year, Landcaster said. An SAE advisory committee will then decide whether to adopt the procedure and the use of outside witnesses to verify automakers' claims.

My first car was a 67 Mustang Coupe, 2nd one was a 67 Cougar XR-7, 3rd one was a 66 Mustang Coupe. Why did I get rid of these cars for ? I know why, because I'm stupid, stupid, stupid.

My next Ford.....
Stacy94PGT is offline  
Sponsored Links

  Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > Fordforums Community > Latest Ford News and Racing News > Ford Worldwide News

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Similar Threads
Thread Thread Starter Forum Replies Last Post
Falcon BA's Exported Overseas? viperspit01 Australian Falcons 53 09-25-03 02:17 AM
2003 Ford F-350 Power Stroke Stacy94PGT Ford Worldwide News 1 11-04-02 02:31 PM
Ford F-series Super Duty Gives Customers Power And Style RPO83 Ford Worldwide News 0 10-09-02 12:02 AM
Ballard Power Systems and Ford Power Products Unveil the World's First Hydrogen Gener Stacy94PGT Ford Worldwide News 0 08-07-02 10:41 AM
Ford Product-Led Transformation: 2003 RPO83 Trans | Driveline 0 07-22-02 06:48 AM

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome