We often talk about modding the electrical/charging system to reduce engine load. I happened across a quality source of power demands from various vehicle systems, and thought I would post it.
The list below summarizes the major subsystems (and loads) of the automotive electrical/electronic content of a modern (2006) automobile in the following categories:
- Engine management
- Multimedia and heating, ventilation, and air conditioning (HVAC)
- Body electronics
- Chassis electrification
- Lighting (exterior and interior)
- Future systems
Code:
Engine Management Power (W)
Fuel Pumps Injectors 135
Ignition System 60
Electronic Throttle Sys. 60
Sensors a Actuators 110
Solenoids & Relays 20
Subtotal Engine 385
Amps @ 14.2V 27.11
Chassis Electrification Power (W)
Electric assist steering 300
ABS brake system 200
Air suspension valves 50
Air compressor 500
Subtotal Chassis 1050
Amps @ 14.2V 73.94
Charging System Power (W)
Alternator 3000
Battery (80 Ah) 1000
Starter motor 2200
Multimedia & HVAC Power (W)
High end audio sys. 300
Navigation and GPS 150
Driver information display 30
Cabin climate valves 75
Blower motor + ECU 370
Subtotal Cabin Sys. 925
Amps @ 14.2V 65.14
Lighting (Exterior & Interior) Power (W)
Headlamps (2) 120
Running/Park lights (4) 130
Turn signal lamps 130
Center high mount stop 65
Back-up, interior, license 45
Subtotal lighting 490
Amps @ 14.2V 34.51
Body Electrical Power(W)
Power Windows (4) 560
Power Door Locks (4) 200
Wipers and washers 140
Heated backlight 500
Power seats (2) 460
Subtotal Body Sys. 1860
Amps @ 14.2V 130.99
Future Systems Power(W)
DVD and in-seat displays
MicroJMild-hybrid functions
Active suspension
Frontyrear radar
Obstacle detection & Airbags
Active cruise control
Total Electrical/Electronics 4710
Source of the figures is an article about the increasing complexity & demands on vehicle electrical systems and how to mitgate this.
See more:
Accessory overload threatens auto power budgets: Part 1, burgeoning loads and transients | Automotive DesignLine