You’ve probably heard a lot about variable geometry turbochargers in the past. And, we’re willing to bet you’ve been told horror stories about them as well.
We’re here to give you the facts on VGTs and how much they actually can help your diesel engine.
When you combine the benefits of a VGT with diesel technologies, you’re getting a dynamic, powerhouse platform.
Variable Geometry Turbos actually enhance low-speed torque characteristics, cut turbo-lag and yield excellent fuel economy and emissions protection.
In this post, we’re taking a look at the history of VGTs and what they can do for your diesel engine.
The Development of Variable Geometry Turbochargers
VGT technology continues to improve.
Cummins introduced the latest generation of VGT technology in 2021, and it provides a 5% increase in turbo efficiency. It also incorporates a multi-shroud design and improved wheel options, which give you higher turbine performance.
Early VGTs
Before the mid-2000s, the turbo design for diesel engines featured a fixed blade. These fixed blade turbos are still produced, but in general, diesel has advanced in technology and favors VGTs.
Ford used the VGT on their 6.0 Power Stroke, GM used the LLY Duramax, and it was the 6.7 Cummins for RAM.
Some components were unchanged on the VGT from the fixed vane. The compressor side, for instance, stayed pretty much the same.
The exhaust side, however, was radically different. It features a sequence of tear-shaped vanes inside the turbo housing that direct the exhaust flow to the turbine wheel, which slows it down or speeds it up.
Each manufacturer uses a unique design for their pivoting vane configuration.
Benefits of the VGT
In general, the VGT seems to be the most efficient power-boosting technology.
The sliding vane design is a single assembly along the center axis of the turbo, and this turbo produces a stronger airflow through a broader spectrum on engine operations. This gives the turbo more boost at lower RPMs.
Buying a VGT for Your Diesel Engine
Regardless of what engine you install a VGT on, dozens of complex issues can arise that only a qualified diesel mechanic can troubleshoot and repair.
Highway and Heavy Parts has resources to bring you meaningful knowledge and strategies that can help you maintain your VGT. HHP wants to save you time and money by tailoring truck-specific codes to your application.
If you need more information, give our experts a call! We have ASE Certified Techs on staff to provide you with the best customer service, helping you source all the replacement parts you need.
They can also walk you through any questions you might have. Our mission is to take the risk out of buying diesel engine parts.
If you’re looking for affordable OEM quality diesel engine parts with expert advice on the other end of the line, we can help!
From diagnosis through delivery, we’re Highway & Heavy Parts!
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