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Toyota to buck engine downsizing trend, may go larger and turbo-free

Turbocharging isn't really Toyota's specialty, and the Japanese automaker isn't being shy about acknowledging it. Koei Saga, a senior managing officer in charge of drivetrain research and development, says that eschewing turbos and increasing displacement of engines using the Atkinson cycle can produce better power gains without sacrificing fuel economy, Automotive News reports.
Toyota is investing heavily in larger-displacement Atkinson-cycle engines in addition to turbocharged engines, but Saga doesn't think the automaker will use turbocharging across many product lines. He apparently remains unconvinced that the technology "makes the world better."
In Toyota's eyes then, Atkinson cycle engines do make the world better, and here's how. Their pistons complete four processes - intake, compression, power and exhaust - in one revolution of the crankshaft, and the power stroke is longer than the compression stroke. Traditional Otto cycle engines require two crankshaft revolutions to accomplish those same four operations and have equal-length compression and power strokes. Atkinson cycle engines are more efficient, but less power dense, though increasing displacement can offset that shortfall.

Toyota Recalling 1.67 Million Vehicles Worldwide

UPDATE: Toyota is now announcing specifically which models are covered under its fuel pipe recall in the US. The company is repairing about 423,000 Lexus models that include the 2007-2010 LS, 2006-2011 GS, 2006-2011 IS, 2010 IS C and 2008-2010 IS-F. The automaker says that it isn't aware of any fires, crashes, injuries or fatalities caused by this problem. According to Toyota, the recall is because it's possible for the fuel delivery pipes and the fuel pressure sensor to form a bad seal with the gasket between them because of a protective coating protecting against corrosion on the pipes. It's possible for this to eventually cause a fuel leak, and obviously in a hot engine bay that's a potential fire risk. To fix the problem, dealers will replace the gasket and repair the gasket seating surface between the fuel delivery pipe and the fuel pressure sensor. The company will begin notifying owners soon. You can find the official press release, below. Toyota is issuing three separate recalls covering 1.67 million vehicles worldwide with most of those models in Japan. It looks like the campaigns' impact on the US may be smaller, though. According to Reuters, Toyota isn't aware of any accidents, injuries or fatalities affecting the models. Some yet-unnamed Lexus models might also be affected. The largest of the campaigns does not currently affect any US-market vehicles. About 802,000 units of the Toyota Crown Majesta, Crown, Noah and Voxy in Japan are being repaired to replace a seal that could leak in the brake master cylinder. Those already leaking get a new brake booster, as well, according to Reuters. The only recall currently believed to affect the US is due to a problem covering approximately 759,000 vehicles with 423,000 of them here. The repair is to fix a faulty fuel delivery pipe that could cause a fire if the fuel leaks out. Unfortunately, we don't know which models it covers. Autoblog spoke to Toyota spokesperson Mona Richard and was told the information was still "under embargo." When exactly that embargo will lift isn't yet known, but we're on the case. Finally, Toyota is recalling 190,000 Corolla Rumion and Auris models in Japan for a faulty evaporative emission control unit. Autoblog is in contact with Toyota, and we'll update this story as soon as we know more about its affect on the US market.

Autoblog Podcast #407

Episode #407 of the Autoblog Podcast is here, and this week, Dan Roth, Steven Ewing, and Sebastian Blanco talk about the Michelin Challenge Bibendum, the Toyota Mirai, and the BMW 3 Series falling off the Car and Driver 10Best list. We start with what's in the Autoblog Garage and finish up with some of your questions, and for those of you who hung with us live on our UStream channel, thanks for taking the time. Check out the rundown below with times for topics, and you can follow along down below with our Q&A. Thanks for listening! Autoblog Podcast #407: The video meant to be presented here is no longer available. Sorry for the inconvenience. Topics: Challenge Bibendum Toyota Mirai fuel cell 3 Series falls off Car and Driver 10Best list In The Autoblog Garage: 2015 Acura TLX 2015 Dodge Charger 392 Audi Prologue Concept Hosts: Dan Roth, Steven Ewing, Sebastian Blanco Runtime: 01:07:55 Rundown: Intro and Garage - 00:00 Challenge Bibendum - 18:32 Toyota Mirai - 28:20 C/D 10Best - 44:52 Q&A - 53:52 Get the podcast: [UStream] Listen live on Mondays at 10 PM Eastern at UStream [iTunes] Subscribe to the Autoblog Podcast in iTunes [RSS] Add the Autoblog Podcast feed to your RSS aggregator [MP3] Download the MP3 directly Feedback: Email: Podcast at Autoblog dot com Review the show in iTunes Podcasts Acura Audi BMW Dodge Toyota toyota mirai challenge bibendum