Electric water pumps

General discussion about our beloved Tercel 4WD cars
Post Reply
Typrus
Highest Ranking Member
Posts: 3049
Joined: Sat Oct 23, 2004 4:43 pm
Location: Colorado

Post by Typrus »

A lot of racing applications use electric.
I've yet to hear a 1st hand bad experience.
RIP 10-07- 1984 Toyota Tercel SR5 4wd Wagen 6 speed

RIP 04-05- 1986 Toyota Tercel SR5 4wd Wagen 6 speed

1st Terc- 1987 Tercel SR5 4wd Wagon 6-speed, Sadly cubed

1985 Tercel Standard 4wd Wagon w/ 3-speed auto, Living a happy life in Boulder last I knew
Top
alex17
Newbie
Posts: 2
Joined: Mon Jan 12, 2015 10:21 am

Post by alex17 »

keith wrote:An electric coolant pump could be more efficient in the same way that hybrid cars are more efficient. A water pump draws a lot of power, especially when you are trying to change the flow of coolant, as in accelerating. The water pump is like a dynamo. If the coolant was circulated at a constant rate, once it got in motion, it would tend to stay in motion, using less power.

The down side to this theory is that the heat generated by the engine is not constant. It is directly related to the amount of fuel burned so the coolant velocity must vary with engine speed and load.

I would think that if this really did work, we would all have cars with them by now.
I work on police cars and alot of mid 90s chevrolet caprice classic's have electric waterpumps for the LT1 engine, only problems we have had is leaking after 150,000 miles but thats typical with most engine driven pumps.
Top
Post Reply

Return to “General”