Technical possibilities

**Monodon** · October 7th, 2004 11:00 AM

Just a thought mga tsikoteers. a car's engine cannot make use of all the available horsepower because of the many accessory components it also has to power like the compressor, power steering..etc. it would be great if auto designers could find a was to make this components electrical so as not to draw power from the engine anymore.Any comments? ;)

**impulzz** · October 7th, 2004 12:08 PM

think of it this way... if the designers made the compressor, steering pump, water pump have their own electric motors... it would be added electrical load...thus they will have to install bigger batteries and higher capacity alternators... so ganun din lalaki batteries at alternators eh di yung HP ng engine will be used to generate more electricity for the extra load and to pull the weight heavier batteries.

pero one thing na naisip nila para less load sa engine ay gawing electric yung radiator fan malaki ang igagaan ng engine. yung ibang pang karera dito sa atin convert nila...mga owner at box-type lancers.

**jim** · October 7th, 2004 12:09 PM

meron nang electronic aircon compressor. ewan ko lang kung anong cars na may gamit nito. :-)

**niky** · October 7th, 2004 02:51 PM

The Toyota Prius uses a separately powered compressor (not belt driven.)

There are cars out now (don't know which brands, but they're there) with electric power-steering (versus the hydraulic systems common today). Testing has shown a 0.5% increase in fuel economy.

Electric water pumps are an available upgrade for older engines, and I suppose they'll work for newer ones, too.

I think the Prius has all accessories running off the charging system associated with its electrical motor/charger, but I'm not so sure.

**orly_andico** · October 8th, 2004 01:52 PM

niky,

the honda city has an all-electric power steering system. the mazda3 has a (partially) electric system, i don't know how "partially" works though...

in general electric steering is on smaller cars because the available power to turn a big car isn't there, at least not until 24V car electrics become more common.

**badkuk** · October 8th, 2004 02:48 PM

why the trend towards electric powered stuff? mas tumatagal ba? cheaper to build? mas tipid sa gas?

**OTEP** · October 8th, 2004 03:07 PM

The only thing holding back the proliferation of electric driven devices on vehicles is that it will require a higher voltage electrical system.

Manufacturers are not ready to face liability in case someone gets electrocuted. A problem not faced by current 12v systems.

**HBOY** · October 8th, 2004 05:21 PM

ayoko ng ganyan.. takot sa baha yang mga yan!.. ehehe...:D

sa akin. .pinagaaralan ko lang yung effect if ever i do remove the engine driven fan and use two bosch aux fans... hehehe...

**orly_andico** · October 8th, 2004 05:34 PM

badkuk,

mas efficient kasi ang electric, because a mechanical fan or pump or whatnot is always drawing load even when not in use (friction losses) while an electric device is only drawing load when in use. also, it is mechanically simpler and lasts longer because you can design motor drive electronics which don't stress the motor. the problem is, takot sa baha. :P

OTEP,

actually 24V will not present a higher shock hazard than 12V. Mababa pa rin yun. And car manufacturers are already dealing with the electrocution issue, e.g. the Prius battery pack is 240V yata (!) so the power wires are differently colored so that the EMT's don't get fried when they use the "jaws of life" to cut open the car.

**niky** · October 9th, 2004 12:04 AM

Originally posted by orly_andico
badkuk,

mas efficient kasi ang electric, because a mechanical fan or pump or whatnot is always drawing load even when not in use (friction losses) while an electric device is only drawing load when in use. also, it is mechanically simpler and lasts longer because you can design motor drive electronics which don't stress the motor. the problem is, takot sa baha. :P

OTEP,

actually 24V will not present a higher shock hazard than 12V. Mababa pa rin yun. And car manufacturers are already dealing with the electrocution issue, e.g. the Prius battery pack is 240V yata (!) so the power wires are differently colored so that the EMT's don't get fried when they use the "jaws of life" to cut open the car.

clap clap clap! Ang galing mo, sir orly!

True... it's not really just the voltage that hurts... it's the amount of amperage that will kill. :p

There is enough power in electric systems to power steering racks on larger vehicles.