heater voltage drop fix?
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Also most laptops require around 19.0 volts DC input from the external power supply. There is an external auto/ aircraft adapter available for them that is a DC/ DC inverter that steps up 12 volts to 19 volts.
The safest way would still be to power it from a good sinewave inverter connected to your battery
.
Mobile computers (MDT’s) have a 12 or 24-volt power supply but they are very complicated and would not be cheap to build.
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Quote:
Originally Posted by Cummins Parts Catalog / 6BT5.9 / Bulletin No. 3672006-00 (Chrysler 250/350 1993 Pickups) Printed 6/92
(Group No. 13.06) (Option No. AH9020) page 2 ~
" . . . . Air Intake Heater ~ 220amps @ 12volts . . . . . "
Wonder which heats up more, the grids of the small wire that feeds them?
Jim
Originally Posted by Cummins Parts Catalog / 6BT5.9 / Bulletin No. 3672006-00 (Chrysler 250/350 1993 Pickups) Printed 6/92
(Group No. 13.06) (Option No. AH9020) page 2 ~
" . . . . Air Intake Heater ~ 220amps @ 12volts . . . . . "
Wonder which heats up more, the grids of the small wire that feeds them?
Jim
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From: over yonder back there
Quote:
Originally Posted by Cummins Parts Catalog / 6BT5.9 / Bulletin No. 3672006-00 (Chrysler 250/350 1993 Pickups) Printed 6/92
(Group No. 13.06) (Option No. AH9020) page 2 ~
" . . . . Air Intake Heater ~ 220amps @ 12volts . . . . . "
Wonder which heats up more, the grids of the small wire that feeds them?
Jim
Originally Posted by Cummins Parts Catalog / 6BT5.9 / Bulletin No. 3672006-00 (Chrysler 250/350 1993 Pickups) Printed 6/92
(Group No. 13.06) (Option No. AH9020) page 2 ~
" . . . . Air Intake Heater ~ 220amps @ 12volts . . . . . "
Wonder which heats up more, the grids of the small wire that feeds them?
Jim
so your saying it may be of benefit to use thicker wire between the grids and the solenoids, and the solenoids and the batteries? Also, i do not have the solenoids in my truck anymore, and was considering putting new ones in, but having them on a master switch, so that they do not run unless i want them too. I do not see why you couldnt use a universal type solenoid, such as a starting solenoid from a lawn tractor. They look pretty much the same. You seem pretty knowlegable in the electronics department, and i find your electrical posts very helpful.
Last edited by EClancy; Jan 28, 2007 at 10:34 AM. Reason: cant spell
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From: Buies Creek, NC
Running thicker cables to supply the heater grids will not address the concerns Thomtek5 has (overall voltage drop). It would only decrease the voltage drop to the heaters themselves. Changing nothing else, the only way would be to increase battery capacity or alternator capacity. 
HOWEVER, . . . . .
Seeing that the CTD has in fact two (2) separate heater circuits powered by two (2) individual relays, one might consider Staging them.
A few notes beforehand ~
A NOTE FROM ME: It appears there's an error in the printing as the manual fails to spell out the post-heat cycle. They simply print "POST-HEAT" .. . . then nothing. 
Anyhoot, what if one were to install a manually adjustable thermostat that would only allow one grid heater relay to be energized at 66*? The second, thermostat controlled relay would fire at say .. . 35*F.
With that, in milder cold weather, only 1/2 the normal amperage (110a @ 12v) would be drawn lessening the demand on the electrical system as a whole while possibly still addressing the engine builders concerns.
. . . [insert evil grin]
HOWEVER, . . . . .
Seeing that the CTD has in fact two (2) separate heater circuits powered by two (2) individual relays, one might consider Staging them.
A few notes beforehand ~
Originally Posted by Operation and Maintenance Manual / Industrial B3.9, B4.5, and B5.9 Series Engines. Bulletin 4021389. Printed Aug 2005
A grid heater is available that improves cold weather starting characteristics by heating the intake air. It can also serve to reduce white smoke if it is energized during cold ambient temperatures while the engine is at idle.
The electric grid heater operates in a preheat and post heat mode. The length of heater on-time is a function of the engine temperature.
If the engine ambient air temperature is greater than 19*C (66*F), the electric grid air heater system will not be activated. If the engine ambient air temperature is below 19*C (66*F), the system will operate as follows:
Engine Starting Cycle
1. Turn the ignition key to the RUN position. When the key is in this position, the WAIT-TO-START lamp will be illuminated for approximately 25 seconds. Do not crank the engine until the WAIT-TO-START lamp shuts off.
2. When the WAIT-TO-START lamp goes out, the preheat cycle is complete. Depress the accelerator pedal and crank the engine.
3. Post heating occurs as the grid heater elements are cycled for a while with the engine running. Post-heating helps warm the engine up faster and eliminates white smoke. Post-heating is determined by the engine ambient air temperature upon start-up.
NOTE: The controller is reset each time the ignition switch is turned off and the cycle will start over.
The electric grid heater operates in a preheat and post heat mode. The length of heater on-time is a function of the engine temperature.
If the engine ambient air temperature is greater than 19*C (66*F), the electric grid air heater system will not be activated. If the engine ambient air temperature is below 19*C (66*F), the system will operate as follows:
Engine Starting Cycle
1. Turn the ignition key to the RUN position. When the key is in this position, the WAIT-TO-START lamp will be illuminated for approximately 25 seconds. Do not crank the engine until the WAIT-TO-START lamp shuts off.
2. When the WAIT-TO-START lamp goes out, the preheat cycle is complete. Depress the accelerator pedal and crank the engine.
3. Post heating occurs as the grid heater elements are cycled for a while with the engine running. Post-heating helps warm the engine up faster and eliminates white smoke. Post-heating is determined by the engine ambient air temperature upon start-up.
NOTE: The controller is reset each time the ignition switch is turned off and the cycle will start over.
Anyhoot, what if one were to install a manually adjustable thermostat that would only allow one grid heater relay to be energized at 66*? The second, thermostat controlled relay would fire at say .. . 35*F.
With that, in milder cold weather, only 1/2 the normal amperage (110a @ 12v) would be drawn lessening the demand on the electrical system as a whole while possibly still addressing the engine builders concerns.
. . . [insert evil grin]
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From: Colorado
...anyhoot, what if one were to install a manually adjustable thermostat that would only allow one grid heater relay to be energized at 66*? The second, thermostat controlled relay would fire at say .. . 35*F.
With that, in milder cold weather, only 1/2 the normal amperage (110a @ 12v) would be drawn lessening the demand on the electrical system as a whole while possibly still addressing the engine builders concerns.
. . . [insert evil grin]
With that, in milder cold weather, only 1/2 the normal amperage (110a @ 12v) would be drawn lessening the demand on the electrical system as a whole while possibly still addressing the engine builders concerns.
. . . [insert evil grin]
Eeeeexellent idea. One additional part, couple wires, Simple. Efficient. I love it. I'm gonna do it. Someday. Maybe. When I have nothing better to do...
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Joined: Mar 2003
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From: New Holland, PA
HOWEVER, . . . . .
Seeing that the CTD has in fact two (2) separate heater circuits powered by two (2) individual relays, one might consider Staging them.
A few notes beforehand ~
A NOTE FROM ME: It appears there's an error in the printing as the manual fails to spell out the post-heat cycle. They simply print "POST-HEAT" .. . . then nothing.
Anyhoot, what if one were to install a manually adjustable thermostat that would only allow one grid heater relay to be energized at 66*? The second, thermostat controlled relay would fire at say .. . 35*F.
With that, in milder cold weather, only 1/2 the normal amperage (110a @ 12v) would be drawn lessening the demand on the electrical system as a whole while possibly still addressing the engine builders concerns.
. . . [insert evil grin]
Seeing that the CTD has in fact two (2) separate heater circuits powered by two (2) individual relays, one might consider Staging them.
A few notes beforehand ~
A NOTE FROM ME: It appears there's an error in the printing as the manual fails to spell out the post-heat cycle. They simply print "POST-HEAT" .. . . then nothing.
Anyhoot, what if one were to install a manually adjustable thermostat that would only allow one grid heater relay to be energized at 66*? The second, thermostat controlled relay would fire at say .. . 35*F.
With that, in milder cold weather, only 1/2 the normal amperage (110a @ 12v) would be drawn lessening the demand on the electrical system as a whole while possibly still addressing the engine builders concerns.
. . . [insert evil grin]
1st Generation Admin
Joined: Jan 2005
Posts: 4,601
Likes: 118
From: Buies Creek, NC
So says the FSM wiring diagrams. 
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