subject
Engineering, 24.04.2020 16:44 kaleabussell9

There has been considerable research on low-heat-rejection (LHR) diesel engines (sometimes called adiabatic diesels). These engines insulate the combustion chamber with high temperature ceramic materials to reduce the amount of heat normally lost to the coolant. Also, the increased energy available in the engine exhaust is used to turbocharge the intake air. You are asked to compare a turbocharged LHR diesel engine against a baseline, naturally aspirated (no inlet boost) diesel engine with cooled metal combustion chamber walls. Assuming that both engines have the same compression ratio, engine speed, combustion chamber geometry, injection timing, type and amount of fuel injected per cycle: a) Which engine is likely to induct more mass of fresh air to the cylinder per engine cycle and why? b) Which engine is likely to experience higher peak pressure and temperatures, why? c) Which engine is likely to have a decreased tendency to knock, why? d) Which factors are likely to favor the LHR engine's production of gross indicated work and why? e) Explain why long ignition delays affect engine startup

ansver
Answers: 3

Another question on Engineering

question
Engineering, 03.07.2019 15:10
Apiston-cylinder with a volume of 0.25 m3 holds 1 kg of air (r 0.287 k/kgk) at a temperature of 100 c. heat transfer to the cylinder causes an isothermal expansion of the piston until the volume triples. how much heat is added to the piston-cylinder?
Answers: 3
question
Engineering, 04.07.2019 18:10
A-mn has a cubic structure with a0 0.8931 nm and a density of 7.47 g/cm3. b-mn has a different cubic structure, with a0 0.6326 nm and a density of 7.26 g/cm3. the atomic weight of manganese is 54.938 g/mol and the atomic radius is 0.112 nm. determine the percent volume change that would occur if a-mn transforms to b-mn.
Answers: 2
question
Engineering, 04.07.2019 18:10
Which of the following controllers anticipates the future from the slope of errors over time? a)-proportional b)-on/off c)-integral d)-derivative.
Answers: 2
question
Engineering, 04.07.2019 18:10
Journeyman training is usually related (clo2) a)-to specific tasks b)-to cost analysis of maintenance task c)-to control process to ensure quality d)-to installation of machinery
Answers: 2
You know the right answer?
There has been considerable research on low-heat-rejection (LHR) diesel engines (sometimes called ad...
Questions
question
Mathematics, 16.08.2019 17:10
question
English, 16.08.2019 17:10
question
English, 16.08.2019 17:10
question
Computers and Technology, 16.08.2019 17:10
Questions on the website: 13722367