If you want to get substantially better fuel economy out of a car or truck, your options for doing so are somewhat limited. You can lighten the vehicle, but doing so is likely to reduce overall strength or substantially increase the price. You can add a hybrid drivetrain, but that adds weight, increases complexity and adds to the price. You can downsize the engine, but few drivers are willing to accept a significant reduction in power just to gain a few more mpgs. There’s another choice, though, and it’s one that’s being rapidly embraced by manufacturers as the best and most cost-effective solution: downsize the engine, and then turbocharge it.
In the old days, turbos had a questionable reputation for reliability. Formula One engines of the 1980’s, for example, were small displacement, turbocharged four-cylinders that ran massive amounts of boost to create power. Calling these engines fragile is an understatement, and spectacular engine failures were common. Even on road cars, turbos often experienced bearing problems related to oil circulation, and engine failure was far more common than on less stressed, normally aspirated cars.
Not so with the new generation of turbocharged cars. Ford’s EcoBoost, for example, runs a modest amount of boost, but pumps the additional air into an engine that already has high compression and gasoline direct injection. High compression and turbocharging used to be a recipe for disaster, but today’s knock-sensing technology makes such a setup possible. The end result is more power, plus better fuel economy, from a smaller displacement engine.
Turbo and component supplier Honeywell sees the writing on the wall. Their vice president of engineering, Steve McKinley, summed it up by saying, “Engine downsizing coupled with turbos is the quickest way to make a significant improvement in the overall fuel efficiency of the U.S. automotive portfolio while maintaining performance levels.” In other words, now would probably be a very good time to invest in Honeywell stock.
GM agrees with this philosophy, too, and offers a 1.4-liter turbo option for their Cruze compact sedan. The upcoming Sonic will have a forced-induction engine choice, too, and don’t be surprised to see turbocharged fours replacing V-6s and I-6s throughout many manufacturer’s product lines.
More power from less gas? What’s not to like about that?
Source: Left Lane News
Showing posts with label Automotive Glass. Show all posts
Showing posts with label Automotive Glass. Show all posts
Friday, August 26, 2011
Friday, October 24, 2008
how do I remove drivers side window on 1999 Saturn SC2?
Question:
I have removed both the interior and exterior door panels on the driver's side. I can't seem to figure out how to remove the two clips that hold the bottom of the drivers window in place on the roll-up mechanism. My windows are the manual roll-up type, not powered.
Answer:
You are almost there. all you have to do now is push the window glass back towards the car( also with the window about half way up so the 2 white tabs that hold the window to regulator is visible) then the tab that is closer to the back of the car push down on the tab. you will see there is a tab with a lock on it just push down on the tab and push the window glass back this will make the front tab butt up against the window glass. do the same thing to the front tab now. push down on the tab and then push the glass back and up now. the glass comes out in between the inner and outer door panels.
I have removed both the interior and exterior door panels on the driver's side. I can't seem to figure out how to remove the two clips that hold the bottom of the drivers window in place on the roll-up mechanism. My windows are the manual roll-up type, not powered.
Answer:
You are almost there. all you have to do now is push the window glass back towards the car( also with the window about half way up so the 2 white tabs that hold the window to regulator is visible) then the tab that is closer to the back of the car push down on the tab. you will see there is a tab with a lock on it just push down on the tab and push the window glass back this will make the front tab butt up against the window glass. do the same thing to the front tab now. push down on the tab and then push the glass back and up now. the glass comes out in between the inner and outer door panels.
Labels:
Auto Repair,
Automotive Glass,
Questions and Answers,
Saturn
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