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Diesel Variable Geometry (VGT) Turbos Explained - Includes VGT components and electronics (Paperback)
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Diesel Variable Geometry (VGT) Turbos Explained - Includes VGT components and electronics (Paperback)
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The role of the modern automotive technician has changed
drastically in the past decade. The job of today's vehicle
specialist involves a deep knowledge of a wide variety of technical
disciplines. Few professions encompass such a diverse understanding
of technology. The automotive technician is now expected to know
about chemistry, electronics, mechanics, optics, as well as posses
a deep analytical mind. The last only comes with time and
experience. This book contains a wide array of automotive
applications. Emphasis is placed on a practical approach, with the
theory to back it up as well. It is, however, expected that the
technician already has a basic understanding of automobiles and
electronics in general. Special thanks are giver to Carmen Diaz for
her invaluable input and patience during the proofreading and
editing of this book. She's also instrumental in the support role
of the book. Table of Contents Variable Geometry Turbo (VGT)
Introduction (An introduction to the VGT or Diesel Variable
Geometry Turbo chargers developed to circumvent the drawbacks of
turbo technology. This section is full with details on specific
pressure values and operation. See how they compare to older
regular turbos using actual shots and CG animation technology.)
Diesel VGT Turbo Facts (Purely factual information on aperture
ratio, aspect ratio, exploded computer animation view, pumping
loses, lag time and low boost threshold specifications. Get an in
depth short view on VGT turbo units.) Diesel VGT Details 1
(Detailed a basic explanation on part-1 of how these units change
their geometry during operation. See how parts interlink with each
other. This is a primer for VGTs and the first book section on VGTs
facts) Diesel VGT Details 2 (Extremely Detailed part-2 of how these
units change their geometry during operation. See how parts
interlink with each other. See the system is operation from
different angles to visualize their operation.) Diesel VGT Turbo
Disassembly and Inspection (Details on disassembling and inspecting
the variable geometry turbo chargers section using actual real
world chots and CG imaging animation to show concepts. Learn how to
mark parts for orientation, align the unison ring and inspect the
unit.) Diesel VGT Turbo Cleaning and Assembly (Get the scoop on
cleaning and assembling the VGT turbo units. Learn to clean the
sender, unison ring, housing, recess cam area and prep the unit for
assembly. Finally, learn to assess the VGT alignment and operation
from a visual inspection before releasing the unit. ) Diesel VGTs
Turbo Failures (See which parts tend to fail on a VGT turbo unit.
Learn from actual tech derived anecdotes compiled during a few
years of work. See how heat issues shortens the life of these
components.) Diesel VGT Turbo Vacuum Actuator OBD-2 Monitor (Sheds
lots of information on the VGT vacuum actuator (when employed) as
it relates to the OBD-2 diagnostic system. These VGTs employ no
feedback sensor and the MAP sensor is used instead. See how it all
works using waveforms and graphing interpretations.) Diesel VGT
Turbo Electronic Actuation Basics (Explains the more precise
electrical actuation of the VGT turbo mechanism as opposed to
hydraulic actuation. See how its wired to the ECM and how a
feedback position sensor is used. See why and how electrically
controlled VGTs operate.) Diesel VGT Turbo Position Sensor Test
(Learn about the specific electrical characteristics and voltage
values of the VGT electrically controlled systems. This section
explains about voltage reference, feedback values and grounds
relating to the VGT turbo control.) Diesel VGT Turbo Speed Sensor
Test (These units are so well developed that a turbine speed sensor
is also used to provide the ECM with turbo speed values. This
sensor is also used to prevent over speed and control the boost.
See how a magnetic or Hall-Effect sensor is used to determine
parameters.)
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