Cooling System: Cont

As the car moves forward it generates a low pressure region behind it. Having a grill in the rear end of the car allows the low pressure region to extract air out of the engine bay. this pulls more air in through the intakes and provides constant circulation oif air around the motor keeping it cool.

Cooling System details

According to available data the motor will need a cooling rate of 155J/s to run effectively. This would require the motor to be mounted with large heat sinks .

However for the heat sink to work effectively, constant airflow around it is required. This will be provided by the ducts.

The two side ducts will push air in from the sides and one large duct will push air in from above directly on top of the heat sink. The rear end of the car will be covered by a grill.

When the car will move forward air will ram into the intakes. A low pressure region will also be generated behind the car due to its motion. This region will be at a lower pressure than the front of the intakes and the engine bay and will draw out air from the engine bay through the grill.

This process will allow constant free airflow through the engine bay and will greatly assist in cooling the motor.

This design will also provide airflow for the internal combustion engine when it is used in the shell eco challenge without any modifications.

The main goal of Shell Eco is fuel efficiency therefore a good airflow to the engine is crucial.

Cooling System

This has been long overdue. We have been working on the actual gearbox construction and easter holidays have started. this is a concept design for the cooling system. Air vents have been added to force air on the motor. the motor itself will be covered by a heatsink so this should keep tempratures low enough to work properly.

After easter break is over i plan to start mounting the power-train and a floor. After which we will begin construction of a body shell.

Photo Archive

Just reposting the link. I thought the last link was not clearly visible.

http://www.flickr.com/photos/46267928@N05/sets/72157623157558096/

Progress of sorts....

Hello!

I have not been able to post for the last two weeks. I was a little too busy with university work.

A lot of work has been done to the car since we started. We added the front wheels and fixed the steering linkage. Also i constructed a new mock up gearbox just to see is the design we are going to go with fits properly.

We had to do this because i realised that the old gearbox was backwards. that is it was designed for mounting next to the firewall behind the driver's seat. It was a good design but i felt it was taking up room where we thought the batteries and the IC engine would go.

So i decided to take it apart and build a new casing more suited to our needs.

i used a laser prototyper and solid works to build it. It did not take too long but the main problem i had was taking the old gearbox apart. now usually I excel at taking things apart but in this case tight bearings and inaccessible screws made it a difficult task.

The case in the photograph is a mock up made of plywood. The real gearbox will look the same but will be made of aluminium.

Also the flicker gallery has been updated with more recent photographs.

More soon

The same renderings from before but with better viewing angels to get a better idea of the distance.

hopefully we will do some 'Real' work on the car this week and we will be this blog aswell.

Tasks for 19/01/2010

Tasks:

1. Show where and how both engine and elec. motor will be mounted

2. Where are the rear wheels going to be placed

3. What changes are going to be done to front wheels

4. How and where is the gearbox going to be mounted

5. How is the chassis going to be strengthened

6. Update Gantt chart

7. How is the breaking going to work

8. add floor, aircraft material floor tony suggested

9. Steering system needs to be revised

10. What things are needed to achieve all these