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The first car was invented in 1885 by German Karl Benz.
Some say that the car was made to keep the roads clean from horse poo
• Originally cars were quite slow but with time they got a lot faster.
X ray of car
4 stroke engine
• this is the engine of a normal car.
• These are the stages• 1 petrol enters motor.• 2 engine creates spark.• 3 releases energy through petrol combustion.• 4 pushes waste out exhaust pipe.
Bourke engine
• DOHC or Twin Cam engine• • 4-cylinder 16-valve DOHC engine
• DOHC means Double OverHead Cam, or sometimes it could be called "Twin Cam". A DOHC setup is used in most of newer cars. Since it's possible to install multiple valves per cylinder and place intake valves on the opposite side from exhaust vales, a DOHC engine can "breathe" better, meaning that it can produce more horsepower with smaller engine volume. Compare: The 3.5-liter V6 DOHC engine of 2003 Nissan Pathfinder has 240 hp, similar to 245 hp of the 5.9-liter V8 OHV engine of 2003 Dodge Durango. Pros: High efficiency, possible to install multiple valves per cylinder and adopt variable timing.Cons: More complex and more expensive design.
• by Vlad Samarin
DOHC or Twin Cam engine
Positive Negative Interesting
Cars don’t leave a mess on the road.
Cars don’t make horse poo but they make a mess by pollution
Car designers want to make cars that don’t make pollution.
Cars go faster and longer distances than horses.
But for a car to do that you need some oil.
People dig miles under ground to get oil.
Cars are more indestructible than horses
But then you have to dig up a hole lot of rock and compress it.
There is nothing good about pollution.
• For a awesome time line go to http://www.yourdiscovery.com/cars/timeline/ click on the link
• “click on me’’. Said the link.
Future cars
• In the future designers hope to make cars that won’t make pollution.
Rev list
• Wiki
• Google images
• Everydayquestions.com
• samarins.com
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