Transcript 36/42 Volt Systems Are Coming - Gem State Gymnastics Academy

36/42 Volt Systems Are
Coming !
By: A.S.T. Training
Copyright 2001
Why is it called a 42 volt system ?
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The multiple factor:
6 volt battery/7 volt charging….x2
12 volt battery/14 volt charging…x3
36 volt battery/42 volt charging…
Why do we need this ?
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Too many electrical
loads present.
Avoid today’s
brownout conditions.
Preparation for future
advancements.
When can we expect this ?
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Conflicting reports as
to who will have it
first.
Generally speaking
the first vehicles
should be released in
2001. BMW,
Corvette, Nissan,
Renault.
Main stream by 2005.
What is in store for technology ?
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Disappearing drive
belts.
Electric water pumps.
Electric A/C
compressors
Electric power
steering racks.
Electric brakes and
suspension.
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Electric valve trains.
Start/Stop technology.
Idle shut down.
No starters.
Instant run.
Rear mounted ISG
“integrated
starter/generator”
Multiple batteries or
new battery
technology.
Disappearing drive belts….
Disappearing drive belts will reduce drag on
engine, resulting in improved emissions.
Electromagnetic Valve solenoids.
This is a biggie !
Obviously no cam shaft drag as well as no timing
chain or belt worries , but also no more valve
timing issue. The PCM will now be able to
precisely control spark timing and advance.
This will have a dramatic improvement on
emissions and horsepower !
Liquid cooled alternators and
ISG’s ?
You bet !
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These new devices can
be belt driven, mounted
to the driveline in the rear
of the crankshaft or on
the front of the crankshaft
by the balancer.
They will get Hot! Air
cooling or liquid (coolant)
cooling will need to be
done.
This will dramatically
improve heating systems.
What do these new ISG’s look
like ?
Vistean unit
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This unit can produce
up to 12kW.
Siemens Unit
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Can be used to drive
the vehicle in boost
mode.
Up to 15 kW can be
achieved.
Sach’s dyna start
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Stator and Rotor are
connected to
crankshaft.
Start & Stop technology. (WOW)
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These new systems can now have the
vehicle shut off at idle conditions.
This will greatly improve emissions.
When the light turns green and you step
on the gas you will accelerate with the
same ease as always, except with less
driveline twist ! Less u-joints and mount
jobs.
Instant run technology.
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When we typically start a conventional vehicle
we are dealing with around 100-200 cranking
rpm. This requires us to add a great deal of fuel
to the mixture and deal with retarded timing
performance and emissions concerns.
These new systems will instantly spin at speeds
of 500-600 RPM, thus improving performance
and emissions.
These systems can even be used to help propel
the vehicle !
The first systems will be dual
voltage systems.
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The early systems will be dual voltage.
They will use 42 volts to start and charge
the battery {S}.
Most other devices will still use 14 volt
technology.
You will need to attend classes to be able
to diagnose these and the new 42 volt
systems.
Inverters for the early systems.
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These devices will get
hot !
They will most likely
fail.
This is what the
vehicle will use to
achieve the dual
voltage ability.
What about batteries ?
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This is the tough issue.
Car manufactures are
having trouble making an
affordable and
dependable battery.
The early systems will
use conventional
batteries either a 12 and
24 volt pair or 3, 12 volt
batteries in series.
New battery technology
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Lithium batteries
show some promise.
General Motors will
use a new glass mat
battery. (2001
corvette)
This battery can be
mounted in any
position except
upside down.
New battery technology
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These new batteries are fully
recombinant. This allows the
electrolyte to be absorbed into
the glass fiber mats
surrounding each plate.
Each plate –glass electrolyte
package is a sealed unit.
The glass mats also help
almost all the Hydrogen and
Oxygen created by the battery
to recombine into water
instead of escaping as a gas.
As the battery charges it is
converted back to H and C.
Balancer
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Remember, the harmonic balancer will
most likely be removed with these new
systems.
Typical vehicle schematic
Equipment needs…. $$$$$$$
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You will most likely need to either update your
current tools with software.
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If your existing equipment is too old to be
updated then replacement will be necessary.
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Battery/load testers
Scanners
Etc.
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Thank YOU
AST wishes to thank each and everyone in
attendance tonight. We hope you have
enjoyed this presentation and that you will
let us know if we can be of any further
assistance to you in the future.
John Forro