Tag Archives: Engineering Explained

Here’s how Mazda goes about reducing turbo lag

Mazda hasn't been shy about its dedication to the internal combustion engine. After all, the Japanese company will likely arrive first to market with a homogeneous charge compression ignition engine (HCCI), which will provide tremendous fuel economy improvements without the loss of performance. But today we're talking turbo lag, and how Mazda aims to reduce...

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Why don’t pushrod engines have high redlines?

Pushrod engines may not be high-tech by today's standards, but they soldier on and have benefits of their own. One downfall, however, is their ability to rev. Pushrod engines tend to have rather low redlines. You won't find a GM small-block V-8 revving to 9,000 rpm, but there's a reason for it all. Jason Fenske of Engineering Explained is here to help us...

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What is an octane rating and what does it mean?

You pull up to the pump and you are presented with a few choices, and we're not talking about different fuel types here. We're talking, of course, about octane ratings. Those are large figures at the fueling station, and you know if you press the higher one you're going to spend more money. Why is that and what does is all mean? Jason Fenske from...

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Why Ford’s flathead V-8 engine died

Ford's famed flathead V-8 was revolutionary when the automaker put the engine into production in 1932. After over two decades of service, the flathead V-8 engine was finally laid to rest in favor of an overhead valve design. Why did Ford kill the innovative V-8 engine? That's a job for Jason Fenske of Engineering Explained to tell us about. Jason takes the...

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Here’s how Audi uses electric compressors to eliminate turbo lag

Automakers have started using electric compressors to help eliminate lag in their turbocharged engines. The first with the technology was Audi, which introduced it in its SQ7 TDI high-performance diesel SUV sold overseas. The SUV's engine features a pair of turbochargers, a diesel V-8, a 48-volt electrical system, and an electric compressor, also referred...

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How dynamic skip fire tech can cut V-8 fuel use up to 20 percent

Delphi's dynamic skip fire, developed by Silicon Valley startup Tula Technologies, is set to make its debut in the 2019 Chevrolet Silverado and 2019 GMC Sierra, promising big fuel economy improvements for the big trucks. While normal drivers may never even realize the system is hard at work, Jason Fenske of Engineering Explained is here to help us...

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Here’s how Audi is eliminating body roll

Too much body roll is never a good thing. To tighten things up further, Audi has introduced a system featuring two electronic sway bars to nearly eliminate body roll. And who would be better to give us a walkthrough on how the system actually works than Jason Fenske of Engineering Explained. In the video, Jason breaks down how the electronic sway bars work...

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How do centrifugal superchargers work?

Your car arrives from the factory. Bolted under the hood is an engine that makes modest power, and it does so by breathing just fine on its own. It could make more power though and that extra motivation could easily come by way of a bit of forced induction. It's time to supercharge your ride. But first, you should probably learn how a supercharger performs...

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How did Volkswagen’s diesel defeat device work?

Every media outlet in the world covered Volkswagen's tangled web of lies and deceit as "Dieselgate" opened up and spewed the truth nearly three years ago. Its consequences are ongoing today, and VW's future trajectory has been changed forever. But, how exactly did VW's "defeat device" work? Jason Fenske, host of Engineering Explained, breaks it all down...

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Mercedes created the world’s most efficient racing engine

Mercedes-Benz dominated Formula One in 2017, and part of its success was no doubt due to its latest F1 powertrain. The big news surrounding the engine is the fact it achieves a 50-percent thermal efficiency. What's so special about that? Jason Fenske of Engineering Explained is here to tell us. Thermal efficiency is the percentage of the energy content of...

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