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Which car has a more efficient engine - a petrol car or an electric car?
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Which is more efficient a petrol engine or a diesel engine?
It will depend upon the conditions. Under normal operating conditions a diesel engine is more efficient than a petrol engine.
How much more efficient is a diesel engine over a petrol engine?
Overall it is about 20%
What is more efficient diesel or petrol car?
diesel is more efficient
What is a hybrid vechicle?
A hybrid vehicle uses two or more motors and the motors are different types. The hybrid cars selling now have a petrol engine and one or more electric motors. The petrol engine can drive the wheels as in a normal car, and can also drive a big alternator which charges large batteries. The electric motor or motors run from the battery and drive the wheels too. For maximum power, both the petrol engine and the electric motors are selected to drive the wheels, but this tends to flatten the batteries faster than they are being charged. For cruising, only the electric motors are used and the petrol engine drives only the alternator. It runs at maximum efficiency loads and speeds to recharge or keep the batteries fully charged. The economy gains come from two facts. The petrol engine is relatively small and running at maximum efficiency nearly all the time. The electric system of alternator, battery and motors is far more efficient than an equivalent petrol powered machine anyway.
What is better a diesel or petrol engine?
It's more a question of "different", than "better". Petrol engines can have better power-to-weight ratios, while diesels are a little more efficient.
Is diesel or petrol more efficient?
Diesel engines are more efficient. They get better mileage, produce more torque, and last much longer than a gasoline engine. They are also more expensive to build.
Why diesel gives more milage than petrol and petrol car costly than diesel?
Diesel engines are more efficient and do use less fuel, but they do not cost less than a petrol engine, they cost more. Diesel fuel also costs more. A diesel engine will however last longer.
Does it make sense to substitute petrol with electric cars?
Yes because the use of oil is expelling CO2 into the atmosphere. Also Electric cars are quickly becoming more efficient then gasoline vehicles. As the standards for electric cars increase so is the innovation behind them. It is already cheaper and more energy efficient to drive an electric vehicle.
Why is a hydrogen engine more powerful than a petrol engine?
As hydrogen releases more energy than petrol, H engine is more powerful than petrol .
Why a turbocharger is not used in a petrol engine?
They certainly are. Using them together with carburetted engines can be a bit tricky, and usually the compression has to be lowered when compared to a naturally aspirated engine.
Why does a petrol engine have more power than a diesel engine?
A petrol engine revs higher, which allows it to burn more fuel and output more power.
Why petrol engines are faster than diesel engines?
Petrol engines are widely considered to be the most efficient of engines, because they are more refined than diesel. Since diesel is not completely refined, it cannot completely combust and so does not (in theory) produce as much energy per litre of fuel as a petrol engine. However, some diesel engines can be made to be much more efficient than petrol engines because they have a different type of fuel, and burn it in a different way. Petrol engines are widely considered to be the most efficient of engines, because they are more refined than diesel. Since diesel is not completely refined, it cannot completely combust and so does not (in theory) produce as much energy per litre of fuel as a petrol engine. However, some diesel engines can be made to be much more efficient than petrol engines because they have a different type of fuel, and burn it in a different way.
