Direct Fuel Injection Update from Tim's Automotive
August 17, 2017
For those of you in Columbia, Missouri who pay attention to these things, you may have been hearing about the new direct injection engines and want to learn more about them. Some deliver the power of a V8 with the economy of a V6.
For example, in one family of engines the conventional V6 makes about 250 horsepower. The direct injection version of the same engine makes over 300 horsepower and gets essentially the same fuel economy. The turbocharged version makes over 350 horsepower.
So what are the differences from a conventional engine?
The core difference is in the fuel injection system. The system most vehicles use now is called a port injection system. The fuel injector squirts fuel into a port just outside the cylinder where it's then drawn into the engine with the air.
With a direct injection system, the injector squirts the fuel directly into the cylinder. The gain in power and economy come because fuel injected directly into the cylinder during the combustion cycle is burned much more efficiently.
First, the fuel is squirted in at hundreds of times more pressure, so it's atomized much better and burns cleaner and stronger. The other big advance is in electronics. Faster engine management computers can control the additional precision required to manage direct fuel injection.
Fuel injectors are precision instruments. They have to deliver a precise amount of fuel at exactly the right time. The design of the engine also dictates a particular spray pattern for the fuel. If a fuel injector is dirty or gummed up, it can't do its job as well. That means less power and worse fuel economy for your vehicle and can lead to damaged fuel injectors.
Replacing fuel injectors at Tim's Automotive isn't cheap. Direct injection injectors are even more expensive because of the extremely high-pressure they use. Same thing for diesel fuel injectors; we're talking mortgage payment-range to replace a set of diesel injectors.
A professional fuel system cleaning from Tim's Automotive gets out the gum and varnish in the whole system, including the fuel injectors. Keep those injectors clean and they'll last a long, long time.
Tim's Automotive
5822 Brown Station Rd
Columbia, Missouri 65202
573-424-6910
http://www.timsautomotiverepair.com
More articles from Tim's Automotive
Change Your Wiper Blades Twice Yearly at Tim's Automotive
February 13, 2018
Because 90% of our driving decisions are based on visual information, unobscured vision is paramount. Which brings us to the topic of today's Tim's Automotive article: wiper blades. While this isn't the most exciting automotive subject, it's important. You wouldn't drive at night in Columbia with... More
Smart Columbia Drivers Protect Against Overheating
February 5, 2018
Engines get hot when they run. This heat can build up and damage vital engine parts, so engines need a cooling system to keep them running. Cooling system failure is the most common mechanical failure in vehicles. This is unfortunate, because these failures are usually easy for Columbia d... More
The Tim's Automotive Guide to Servicing Your Differential
January 29, 2018
Differential? What's that? And what's it for? I've been told by my service advisor that I need to get it serviced, but is that on the level?Do these questions sound familiar? They're not uncommon for Columbia drivers. A lot of us in Columbia don't know what a differential is or what it's ... More