How does valve overlap improve volimetric efficiency in piston engine?
It improves the efficiency of the engine by allowing better exhaust out flow and intake in flow. Read More
send a small amount of raw fuel/air to the catalytic convertor,which increases the efficiency of the operating engine. Read More
It increased the engine's efficiency, making it useful for other things Read More
It increased the engine's efficiency, making it useful for other kinds of work. Read More
Efficiency is defined as output power divided by input power.The efficiency of a heat engine - for specific temperatures - cannot be greater than the efficiency of the theoretical Carnot engine. Read More
Gasoline engines have a 30% efficiency, as compared to a Diesel engine having 40% efficiency. COOL HUH Read More
The maximum Thermal Efficiency of Petrol Engine or Gasoline Engine or Otto Cycle Engine is about 25-30%. Read More
It is not a good efficiency engine. Read More
Will the efficiency of a car engine increase if the muffler is removed or if it is driven on a very cold day?
The efficiency of a car engine will probably increase if the muffler is removed, but this is not certain because the muffler offers some resonance in clearing the exhaust. The length of the exhaust pipe, and its shape is often a complicated task. But if it is driven on a very cold day the situtation is more clear, the efficiency will improve, often markedly. Read More
as intake air temperature increases it lead to decreas in i.c engine efficiency. as engine efficiency is ratio of difference in intake and outlet temperature to intake temperature. Read More
Carnot's heat engine has more efficiency then the other heat engine but it is assumption. Is is not real. RGUKT IIIT NUZVID: N091528 Read More
Bypassing the AC compressor will give a slight amount of fuel efficiency to the engine. However on hot days you will be driving with the windows down which is less efficient than using AC, so its a trade off. Read More
Is it true that thermal efficiency of a diesel engine equals indicated thermal efficiency - brake thermal efficiency?
no Read More
A ficticious heat engine that works at the maximum theoretical efficiency is called a Carnot engine. Real engines, that obviously work at a lesser efficiency, include the combustion engines found in cars. A ficticious heat engine that works at the maximum theoretical efficiency is called a Carnot engine. Real engines, that obviously work at a lesser efficiency, include the combustion engines found in cars. A ficticious heat engine that works at the maximum theoretical efficiency… Read More
Engine efficiency is increased though compression ratio by allowing a more thermodynamic energy to be converted into mechanical energy. Energy transfer is the key to efficiency. Read More
If it is burned - which is the way such fuels are usually used - the energy efficiency is the energy efficiency of a heat engine. The theoretical maximum efficiency is the Carnot efficiency; the real efficiency will usually be considerably less than that. Read More
In IC engine, the inlet valve is always larger in diameter as compared to exhaust by 20-35 % in dia. to improve the volumetric efficiency and to achieve good power and performance even at high speed by overcoming the blow losses. Read More
The efficiency of a Carnot engine is theoretically always greater than that of an actual engine. The fact that it is impossible to build a thermodynamically reversable engine, which is one of the variables necessary to calculate its superiority to a real heat engine, makes the theorum practical for assessing a real heat engines efficiency only. Read More
I measure the efficiency of an internal combustian engine by doing (bhp)/((displacement)*(rpm)) Read More
That depends on the efficiency of the engine. Read More
Efficiency is nothing but calculating how the machine is performing for what it has been made for, Efficiency is usually calculated in % as (output/input )X100. for Eg. the Thermal efficiency of an reciprocating gasoline engine can be calculated as follows, Let, the input for an reciprocating engine is 12MJ and its out put is 4MJ then Efficiency is (4/12)X100 = 33% Read More
the efficiency of a heat engine measured by the ratio of the work done by it to the heat supplied to it. Read More
I would say, heat engine on earth would waste the most energy since it is always limited by thermodynamic efficiency to have some loss. In general, lower the temperature difference will resulted to lower the efficiency, a simple steam engine for a train would be of lower efficiency than a internal combustion engine and lower than complex high pressure steam turbine and is probably the lowest engine efficiency in commercial scale. Read More
The efficiency of the carnot engine - or any engine for that matter - is given by the quocient between the desired effect and what you payed for it, that is, the quocient between the net work output and the heat added to the system. Read More
As a "heat engine", a car engine must rid itself of heat to continue. Efficiency of the heat engine depends on the difference in temperature; therefore, as the temperature outside reaches the temperature inside, the engine stops. Read More
What happens to the efficiency of a heat engine when the temperature of the reservoir into which heat energy is rejected is lower?
Efficiency would increase. Read More
How do you increase thermal efficiency in converting heat energy to mechanical energy eg in internal combustion engine or gas turbine is there any device to improve thermal efficiency?
The first step would be to insulate the system to decrease heat loss then increase the compression ratio of air/fuel mixture as in the ic engine The first step would be to insulate the system to decrease heat loss then increase the compression ratio of air/fuel mixture as in the ic engine Read More
The supercharger, which uses a belt, driven by the engine, to forcer more air into the intake manifold, and a turbocharger, which uses a turbine driven by exiting exhaust gasses, to do the same thing. Read More
Reduce the throttle setting - ease up on the gas. Improve the efficiency of the radiator. Get a bigger radiator, fit an Electric fan, make sure the water pump is working OK. Flush the radiator. Fit water injection to the Engine. Fit an oil cooler. Read More
Why the smaller end of the connecting rod is connected to the piston whereas the larger end to the crank?
If it was the other way around it would rob the engine of power. The heavier you make the piston the more it will rob the engine of power. That is why they make pistons out of aluminum. Some engines have even gone to aluminum connecting rods to improve the efficiency of the engine. Read More
It's not clear what you mean by choke. The 89 was fuel-injected and therefore not equipped with a choke. You may be referring to the THERMAC, which is a device in the intake that sucks warmer air from inside the engine compartment when the engine is cold, to improve cold running, reduce emissions, and increase cold-engine fuel efficiency. Read More
Is heat engine has a100 percent efficiency without the presence of friction and other irriversibity?
Yes. If all of the effects and factors that prevent 100% efficiency are ignored, then the efficiency is 100% . Read More
About 17% if I recall from thermodyanimcs lecture. Read More
by having a steady temperature. Read More
Don't turn it on. Read More
Efficiency Read More
It varies somewhat depending on engine design, but a gasoline engine is approximately 30% efficient due to heat, mechanical loss, etc. Despite modern engines getting about 98-99% efficiency out of the gasoline. Read More
If this, ie 70%, is the total energy loss, it follows that the engine is producing 30% useful energy, so that is its thermodynamic efficiency. Read More
The efficiency of any machine is less than 100% because some of the second law of thermodynamics. In any closed system, some of the energy that is input is lost through friction, radiated as heat, light or noise. Read More
In a diesel engine connected to a generator with a 23% engine efficiency, 1 liter of diesel should produce nearly 2.7 kilovolt-amperes. More with improved engine efficiency. Read More
Does a heat engine of efficiency 100 percent necessarily violate the first and second law of thermodynamics?
A heat engine of 100 percent efficiency violates the second law of thermodynamics and is impossible even in theory. Read More
Power Output / [(1/Thermal Efficiency) - 1], where Thermal Efficiency = 1 - Tc/Th Read More