What forces the air / fuel mixture into the cylinder on the intake stroke?*1 pointA. VacuumD. Volumetric efficacyC. Atmospheric pressureB. Piston movement from tdc-bdc

On a two stroke engine what port does the air / fuel mixture travel through to get from the crankcase to the top of the piston?*1 pointa) Inlet portd) Transfer portb) Exhaust portc) Fuel port

The amount of fuel delivered by the injector depends upon thea.All the above factorsb.Size of injector nozzlec.Length of time the injector is opend.Pressure pushing fuel through the injector

Air enters a jet engine through section 1 with an area of A1=0.5 m2 at a (relative) speedof 250 m/s. The pressure at the entrance is atmospheric pressure (approximately 105 Pa)and the temperature is 300 K. Inside the engine, the injected fuel mixes perfectly withair, with fuel to air mass ratio of 1:30. The enthalpy and the kinetic energy flow rate ofthe fuel can be neglected at the fuel inlet. The combustion releases a heat per unit mass(of air) of 200 kJ/kg, after which the mixture is expanded through a nozzle to the exitsection 2 whose area is A2= 0.4 m2. The product of combustion can be taken to havethe same properties of air (such as Cp=1.005 kJ/kg k, γ=1.4 and so on). The nozzleperfectly expands the flow such that at the exit 2, the pressure is atmospheric pressure.The temperature of the flow at the exit is 400 K. The figure below shows a roughschematic of the engine and the flow. Find the thrust generated by the engine.

A gaseous air‑fuel mixture in a sealed car engine cylinder has an initial volume of 600.mL at 1.0atm. To prepare for ignition of the fuel, a piston moves within the cylinder, reducing the volume of the air‑fuel mixture to 50.mL at constant temperature. Assuming ideal behavior, what is the new pressure of the air‑fuel mixture?

The operation of forcing additional air under pressure into the engine cylinders is known asGroup of answer choicesSuperchargingPre-ignitionTurbulenceScavenging