Gasoline Engine Fuel Efficiency Catches up with Diesel Technology
April 3, 2013 9:30 AM
comment(s) - last by
Gap in fuel efficiency and torque between diesel and gasoline engines is dwindling
Diesel engines are very popular around the world, and are used in both passenger and commercial vehicles due to their efficiency advantages over gasoline engines. In the U.S. passenger vehicle market, they’re largely relegated to heavy-duty pickup trucks (although companies like
Volkswagen have maintained a diesel engine lineup for a few decades
However, diesel fuel averages roughly $0.36 a gallon more than regular unleaded gasoline in the U.S., which can erase some of the cost advantage.
While many diesel-powered vehicles do have better fuel economy than comparable gasoline vehicles, even that benefit is beginning to disappear. In spite of this, many automakers are preparing to launch diesel-powered cars in the U.S., including
Volkswagen Passat TDI
reports that diesel engines in cars no longer have a major advantage in torque and they don't offer significantly better fuel economy. Technology for traditional gasoline engines is improving and the gap in fuel efficiency and torque has vanished due to the proliferation of direct injection and turbocharging.
With this in mind, Ford, Toyota, and Hyundai are staying out of the diesel-powered car market; instead focusing hybrid technology. Hyundai Motor America CEO John Krafcik says that the cost of adding hybrid technology for the consumers about $1,500 compared to a cost of about $5,000 to add diesel power.
"When we ask if consumers are willing to pay that, they ask, 'What are you smoking?'" said Krafcik. "We all have great diesel engines available to us, but gasoline engines are growing."
However, Ford says that it is ready to begin offering diesel-powered cars in the U.S. if there is enough
This article is over a month old, voting and posting comments is disabled
RE: diesel vs. gasoline?
4/3/2013 7:39:10 PM
With turbo direct injection, you don't need to use premium gasoline. Direct injection cools the cylinders so that a higher compression ratio can be used with regular gasoline. The turbocharger yields a broad torque curve, like a Diesel, while still producing a lot of horsepower at higher revs (unlike a Diesel).
For example, the 2.0 L (122 cu. in.) Hyundai direct injected turbocharged engine produces
274 hp (204 kW) (premium fuel)
260 hp (190 kW) (regular)
275 lb·ft (373 N·m) @ 2,000–4,500 rpm (premium fuel)
260 lb·ft (353 N·m) (regular).
RE: diesel vs. gasoline?
4/4/2013 7:35:04 AM
It probably doesn't hurt that a lot of turbocharged engines tend to have a longer stroke in proportion to the bore because they don't need to rev to quite as high an rpm to produce sufficient power. This also gives them more torque at lower rpm.
"If you mod me down, I will become more insightful than you can possibly imagine." -- Slashdot
200 Mbps UK 5G Trial Looks to Scrap Air Traffic Radar for "Retro" System
February 14, 2013, 5:03 PM
North Korea Conducts Third Nuclear Test, Upsets U.N.
February 12, 2013, 6:23 PM
Chevrolet Unveils '14 Cruze Clean Turbo Diesel, Priced from $25,695
February 7, 2013, 8:02 AM
CES 2013: Lenovo Expands Windows 8 Lineup With New Touch Notebooks, Gaming PC
January 6, 2013, 6:00 PM
VW to Take on Hybrid Competitors With 43 MPG HWY, $26K Passat TDI
June 15, 2011, 9:38 AM
Tesla Adding More Superchargers, Stores, Service Centers Throughout Europe in 2014
March 6, 2014, 4:00 PM
EPA to Cut Two-Thirds of Sulfur in Gasoline Starting in 2017
March 4, 2014, 5:40 PM
UPDATE: Apple's iOS Comes to Your Car via CarPlay Infotainment System, iPhone 5 and up Supported
March 3, 2014, 3:28 PM
Four U.S. States Fighting Over Tesla Motors' Gigafactory Location
March 3, 2014, 12:26 PM
Ford: We're "Not Married to Microsoft" for Sync Gen. 3
February 27, 2014, 3:56 PM
Tesla Motors' Gigafactory to Help Push Out Half Million EVs/Year in 2020
February 27, 2014, 9:22 AM
Most Popular Articles
Mt. Gox Bitcoin CEO Can't Stifle Grin as he Bows in Apology for Bankruptcy
February 28, 2014, 5:00 PM
Facebook Kills Popular Messenger App for PCs
March 1, 2014, 4:01 PM
Report: Microsoft Considering Offering Free “Windows 8.1 with Bing”
February 28, 2014, 10:21 AM
Two More Microsoft Executives Leaving the Company
March 3, 2014, 4:38 PM
USAF Moves Forward With Long Range Bomber Program Despite Budget Crunch
March 4, 2014, 9:44 AM
Latest Blog Posts
Tesla vs. BMW: Who Has the Safer EV?
Feb 1, 2014, 2:56 PM
Justice Leaks Details of Next HTC One Two Flagship Phone
Dec 5, 2013, 4:04 PM
Global Cyber Espionage Concerns Reveal Growing Cyber Armies
Nov 29, 2013, 11:04 AM
Is The Period Becoming an Expression of Anger?
Nov 26, 2013, 2:02 PM
NSA and Congress -- You Will Never Kill the Constitution, It's an Idea
Nov 10, 2013, 2:00 PM
More Blog Posts
Copyright 2014 DailyTech LLC. -
Terms, Conditions & Privacy Information