Thursday, August 11, 2011

Review: id America Gasket iPhone Case

id America, a maker of iPhone cases and covers, sent me their Gasket iPhone case to review.



The case is made of brushed aluminum, and is designed to look like an engine block, with cut0uts reminiscent of cylinder bores and cooling passages. In addition to the aluminum shell, the case comes with two clear protectors, for the back and for the front screen. The aluminum shell has a suede inner lining to cushion the phone.



I found the case to fit the phone snugly, and the screen protectors did their job without ruining the usability or feel of the touch screen. Installation was not too hard, though it does take some practice to attach the clear protective film (using the supplied squeegee) without leaving any dreaded air bubbles. Once I had it together, the case felt sturdy and substantial.



Overall, I found the case attractive and effective. I like the automotive inspired design. I would definitely buy one for myself, or as a gift for a fellow gear-head.



The Gasket case can be purchasd from id America here for $30.

Wednesday, August 3, 2011

CAFE: Rise Of The Turbo

One way that automakers will meet the new CAFE standards will be to downsize engines and add turbocharging, as a relatively inexpensive and proven way to get variable displacement. And with direct injection and EGR, the ignition charge can be kept cool, allowing the engine to run highly efficiently on regular octane rating gasoline.

This won't be entirely popular, because even today's low mass, twinned turbos do have some power lag, and they do make different and more annoying noises than a traditional big bore motor. Personally, I would drive a 2.0L gasoline or diesel turbo over a 3.0L naturally aspirated engine, if it would save me 20% or more on fuel, whatever noises it makes.

Another concern about turbos is their durability. I think that Audi, Volvo, Saab, and most recently Ford have proven that modern turbos are robust and can last for the design life of the engine. Ford's "torture test" YouTube series is entertaining, if you want to see a turbo engine severely abused.

The reason turbos help fuel economy is that at low engine load, say when you are cruising down the highway, your engine isn't using much of its power, the turbo isn't really running, and the engine is like a 2.0L I4. However, when you are accelerating, or otherwise making a high power demand, the turbo spools up and allows the engine to consume more air (and fuel), temporarily making it more like the 3.0L V6 you used to drive. Because the EPA fuel economy tests have a good bit of steady state driving, and idling, this variable displacement effect of the turbo really helps the MPG rating.

A smaller turbo engine, all else being equal, will also tend to be lighter weight than a comparable larger engine, which is another source of fuel economy gain.

Since turbos are cheaper than batteries and electric motors, the early CAFE gains are likely to happen through engine downsizing rather than hybridization. The next steps will probably be mild hybrids (start/stop, launch torque) coupled with downsized turbocharged engines.