Toyota Not Ready to Jump on Small Displacement, Turbo Engine Bandwagon
October 16, 2013 9:26 AM
comment(s) - last by
Larger displacement Atkinson cycle engines may be in the future for Toyota
A number of automotive manufacturers have begun to move away from larger displacement naturally aspirated engines to smaller displacement turbocharged engines. The general idea was that smaller and lighter engines would use less fuel while offering the same sort of performance thanks to the addition of a turbocharger. However, in the real world many drivers have discovered that turbocharged small displacement engines are often
unable to deliver on their fuel efficiency claims
Toyota is considering bucking the industry trend and rather than going with smaller turbocharged engines, is considering larger naturally aspirated engines to improve fuel efficiency. Senior managing officer in charge of drivetrain R&D for Toyota Koei Saga recently said that Toyota believes gasoline engines could benefit more from upsizing capacity in conjunction with Atkinson combustion cycles than going smaller with turbochargers.
Atkinson engines today are typically only used in hybrid vehicles like the Prius,
Ford Fusion Hybrid
Hyundai Sonata Hybrid
Honda Accord Hybrid
Increasing the displacement of an engine using the Atkinson cycle would deliver a specific output less than that of similarly sized conventional combustion cycle engines, but fuel economy would be better. Toyota believes that fuel economy would be better than the smaller engines they replace.
Toyota has offered no timeframe for bringing larger displacement Atkinson cycle engines to market and hasn't hinted at which models might get the Atkinson cycle engines.
Mazda experimented with similar “delayed valve”
Miller Cycle technology
over a decade ago in the
Millenia midsize sedan
. But instead of using electric motors to make up for the reduced power density like today’s Atkinson-engine hybrid vehicles, the Millenia used a supercharger.
Saga also talked a bit about the
next generation Toyota Prius
saying that the vehicle will use a mixture of battery technology including lithium-ion and nickel batteries. The reason for mixing battery types is that lithium-ion batteries are better for performance, but the durability and lifespan is better for nickel batteries.
Green Car Reports
This article is over a month old, voting and posting comments is disabled
RE: Toyota is right
10/18/2013 4:13:06 AM
Toyota has had several small, boosted engines. The MR2 comes to mind. They are trying to BS people into believing that LIFETIME operating costs of hybrids are lower than a comperable turbocharged engine. Again, BS. Lithium batteries don't come cheap.
As far as reliability? Turbos have come a LONG, LONG way since the 80's. Materials have vastly improved. Ford's Eco-Boost v6 has made a believer out of millions--and there's a reason for that. Yes, N/A's will have a more linear power-curve. That said, to deliver any given amount of power, you can almost always do it with less weight on a smaller, boosted engine--than you can on a larger, naturally aspirated engine.
I'll swear by turbos. They deliver an altogether more enjoyable driving experince. It's no less visceral than that of the individuals who swear by manuals over automatics.
"If you look at the last five years, if you look at what major innovations have occurred in computing technology, every single one of them came from AMD. Not a single innovation came from Intel." -- AMD CEO Hector Ruiz in 2007
2014 Honda Accord Hybrid to Start at $29,155, Rival Prius in Fuel Economy
September 24, 2013, 10:01 AM
Toyota to Release 15 New Hybrids by 2015, Reveals Specs for Next-Gen Prius
August 29, 2013, 12:18 PM
Consumer Reports: Small Turbo Engines Don't Meet Efficiency Claims
February 5, 2013, 9:29 AM
2013 Ford Fusion Hybrid EPA Certified at 47 MPG (City/Highway)
September 18, 2012, 8:10 AM
37 MPG 2011 Hyundai Sonata Hybrid Priced from $26,545
December 16, 2010, 11:19 PM
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
Report: Microsoft Considering Offering Free “Windows 8.1 with Bing”
February 28, 2014, 10:21 AM
Facebook Kills Popular Messenger App for PCs
March 1, 2014, 4:01 PM
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