A gasoline engine uses 0.01 kg/s of fuel while delivering 55 kW of power. The heating value of the fuel is 35,000 kJ/kg and the fuel density is 900 kg/m^3. In the question that follows, select the answer that is closest to the true value. What is the thermal efficiency of the engine?

The weight of a diesel engine is directly proportional to the compression ratio (W = kr) because extra metal must be used to strengthen the engine for the higher pressures. Examine the net specific work produced by a diesel engine per unit of weight as the pressure ratio is varied and the specific heat input remains fixed. Do this for several heat inputs and proportionality constants k. Are there any optimal combinations of k and specific heat inputs?

Please I request you to answer correctly without copying the answer from book as the question is different

A gasoline engine has a power output of 200 kW. Its thermal efficiency is 32%. (a) How much heat must be supplied to the engine per second? (b) How much heat is discarded by the engine per second? Note: please answer asap! I really need help

Thermodynamics

During the compression stroke of a certain gasoline engine, the pressure increases from 1.00 atm to 19.0 atm. The process is adiabatic and the air-fuel mixture behaves as a diatomic ideal gas. (a) By what factor does the volume change? Vfinal = Vinitial (b) By what factor does the temperature change? Tinal = Tinitial Assume the compression starts with 0.016 mole of gas at 28.5°C. (c) Find the value of Q that characterizes the process. (d) Find the value of AEnt that characterizes the process. (e) Find the value of W that characterizes the process.

The fuel efficiency for Vehicle 1 is modelled by A(t) = t+4 / t+2, and vehicle 2, by A(t) = t-2/ t-4. At what operating time(s) will Vehicle 1 have a lower fuel efficiency than Vehicle 2?

An internal combustion engine is a commonly-analyzed thermodynamic system. In a few sentences, describe the flows of energy and matter across the boundaries of a typical engine.