Auto Express

No surprise: Transporting heavy loads reduces EV . range


Gasoline engines have been around long enough for people to realize that towing and transporting heavy objects negative impact energy saving. Although their popularity and sales numbers are increasing, tram – special electric pickup truck – not enjoying the same depth of experience. That said, we’re learning quickly as new electric models hit the streets and AAAHis new research on the effects of payload on electric vehicle driving range helps to clear up some mysteries.

Organization has its hand on a Ford F-150 Lightning 2022 to experiment and set out to answer two questions:

  • How does the road load force in the loaded test condition compare to the no load condition?
  • How is range and driving efficiency affected by the added load?

The AAA defines road load as “the force applied to a vehicle traveling along the pavement in the opposite direction of its velocity, which has the effect of slowing the vehicle.” It can be helpful to think of this in terms of aero drag, road surface friction, and mechanical friction. The organization uses another term, road load curve, to describe road load as a function of vehicle speed.

Research shows that a 1,400-pound load exerts 33.1% more force on truck compared to the road load curve used by EPA for EV certification. Interestingly, the unladen truck had 5.6% more force. Similarly, AAA found that Lightning F-150 6.1 percent less efficient at no load than the EPA estimate, returning 62 MPGe instead of the EPA’s 66 MPGe. Loading the pickup resulted in a drop to 47 MPGe, 24.2% less than the base estimated fuel economy.

The range also had a hit. EPA estimates 300-mile driving range for Lightning model used in tests. The AAA only had 278 miles on the idling and 210 miles on the 1,400-pound truck. Loaded range findings are 24.5% lower than an unladen pickup and 30% lower than EPA estimates.

Of course, this has long been true for gasoline fuel economy, as some vehicles claim supersonic to reach EPA estimates. The government agency estimates that adding 100 pounds to a vehicle will reduce fuel economy on average by about 1%. That should result in a 14% drop in fuel economy when transporting a 1,400-pound payload, but that pales in comparison to the 24.2% drop seen in the 1,400-pound payload. electric truck.

While this brief study is useful to show how large loads affect range, it is also useful in illustrating that there is often a difference between EPA estimates and world performance. real world.



Source by [author_name]

news7h

News7h: Update the world's latest breaking news online of the day, breaking news, politics, society today, international mainstream news .Updated news 24/7: Entertainment, Sports...at the World everyday world. Hot news, images, video clips that are updated quickly and reliably

Related Articles

Back to top button