How can I make my engine more efficient?

Run the engine fuel-lean, that is, use excess air. It is well known that fuel-lean running improves the efficiency.
Higher compression ratio.
We need new cycles put into practical use.
Run the engine at optimum conditions, meaning low friction (modest engine speed) and low pumping work (air throttle more open).

Is it possible to build an engine that is 100% efficient?

It is impossible for heat engines to achieve 100% thermal efficiency () according to the Second law of thermodynamics. This is impossible because some waste heat is always produced produced in a heat engine, shown in Figure 1 by the term.

Can we make combustion engines more efficient?

While it is difficult to prevent the waste of energy that is innate to all combustion engines, it is still possible to increase fuel efficiency. Until we can produce engines with higher thermal efficiencies, the best we can do is improve combustion efficiency.

What is the most efficient engine design?

The Wärtsilä 31 is quite simply the most fuel efficient, user friendly, versatile engine ever developed. The Wärtsilä 31 is not one single engine, but rather a platform consisting of three different products – a diesel engine, a gas engine and a dual-fuel engine.

Why is a heat engine not 100% efficient?

A heat engine is considered to be 100% efficient if only all the heat is converted into useful work or mechanical energy. Since heat engines cannot convert all the heat energy into mechanical energy, their efficiency can never be 100%.

Why are engines not 100 efficient?

Which fuel is most efficient?

Diesel engines generally achieve greater fuel efficiency than petrol (gasoline) engines. Passenger car diesel engines have energy efficiency of up to 41% but more typically 30%, and petrol engines of up to 37.3%, but more typically 20%.

Is it possible to make a more efficient engine?

A new type of engine could be relatively inexpensive. A new version of the internal combustion engine, which could significantly cut gas consumption, might be surprisingly practical and easy to deploy, according to recent findings by researchers at MIT.

What makes a two stroke engine more efficient?

Long steel connecting rods join the outer pistons to the crankshaft. With two pistons working off one combustion event, the engine behaves as though it has a long stroke—utilizing more of the available energy and increasing efficiency. Yet the crankshaft remains compact and therefore lighter.

Why is a gasoline engine less efficient than a diesel engine?

In conventional gasoline engines, a spark ignites a mixture of fuel and air in a combustion chamber, creating an explosion that drives a piston. While this happens very efficiently when the engine is working hard, it’s less efficient at lower loads, such as during cruising, when less gasoline is being pumped into the combustion chamber.

Which is more efficient HCCI or diesel engine?

But unlike diesel engines, HCCI results in a more uniform combustion and is thus much cleaner. A system that combines HCCI with conventional combustion could improve fuel economy by a few miles per gallon on average, Green says. Several research groups are working on the new type of combustion.

How can I make my engine more efficient? Run the engine fuel-lean, that is, use excess air. It is well known that fuel-lean running improves the efficiency. Higher compression ratio. We need new cycles put into practical use. Run the engine at optimum conditions, meaning low friction (modest engine speed) and low pumping work (air…