Does a valve overlap of at least 45 degrees required for peak efficiency ina four stroke 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
If an engine must do 500 joules of work to pull a 10 kg load up4 meters what is the engine's efficiency?
energy required to lift up 10kg=10x9.81x4=392.4 joule. enegy produced by the engine=500 joule efficiency=392.4/500=78.48% Read More
Gasoline engines have a 30% efficiency, as compared to a Diesel engine having 40% efficiency. COOL HUH Read More
Code 7 2 is catalytic converter efficiency below required level 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
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
That's because they convert the energy to heat first. Do some reading about the Carnot cycle, or the theoretical Carnot engine; briefly, if (for example) the environmental temperature is 300K (27 degrees Celsius), and the heat engine operates at 900K (627 degrees Celsius), then the maximum theoretical efficiency is (900 - 300) / 900, or about 67%. The efficiency achieved in real machines, of course, will be less than that. 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
Is it true that thermal efficiency of a diesel engine equals indicated thermal efficiency - brake thermal efficiency?
no 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
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
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
Diesel is a more combustible fuel than petrol, therefore less fuel is required to generate the same power as petrol. This also means that spark plugs aren't required, like in a petrol engine, since the diesel will ignite off engine compression alone. This also makes the engine arguably more reliable since there are less parts, and less things to go wrong. 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
That depends on the efficiency of the engine. Read More
The COP can be more that one since the heat transferred can be more than power required by the refrigerator but the efficiency can never be more than one since the power generated by engine cannot be more than the total heat content of the fuel. Read More
New bolts required,they are "use once"stretch bolt.Also,an angle gauge is required,or you can make one from card. Torque to 35Nm + 45 degrees + 15 degrees. 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
I measure the efficiency of an internal combustian engine by doing (bhp)/((displacement)*(rpm)) 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
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
About 17% if I recall from thermodyanimcs lecture. Read More
by having a steady temperature. Read More
Efficiency Read More
Don't turn it on. 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
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
NGK spark plugs are commonly used to help increase the efficiency and the performance of a machine. Less voltage is required, therefore, it makes the lifespan of an engine increase to 120,000 miles. Read More
Some head bolts applications are required to turn the bolt an additional 90 degrees as a final step after the initial torque procedure has been done. This step varies with year, make and engine. 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
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
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
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
There are many reasons , few of them are : better efficiency, less weight to power ratio that means they are also used where less power transmission is required, absence of heat exchangers and condensors etc make it less expensive Read More
Power Output / [(1/Thermal Efficiency) - 1], where Thermal Efficiency = 1 - Tc/Th Read More
The cold cranking amps that are required to start your Ford 2.5 liter engine is dependent upon the outside temperature. 450 cranking amps are required at a temperature of 32 degrees. Read More
you take it to a dalership and ask for a fixer upper and they will do it Read More