# A small truck has a four-cylinder, 2.2-liter CI engine that operates on an air-standard Dual cycle…

A small truck has a four-cylinder, 2.2-liter CI engine that
operates on an air-standard

Dual cycle using light diesel fuel at an average AF = 21:1. At a
speed of 2500 RPM, the

engine has a volumetric efficiency is 92%. At this operating
condition, 0.4% of the

carbon in the fuel ends up as soot in the exhaust. In addition,
there is 20% additional

carbon soot from the lubricating oil. The amount of soot is then
increased by 25% due

to other components condensing on the carbon. Carbon density pc =
1400 kglm3

.
Calculate:
(a) Rate of soot put into the environment. [kg/hr]
(b) Chemical power lost in the soot (consider the entire mass of
soot as

carbon). [kW]
(c) Number of soot clusters exhausted per hour. Assume that an
average

cluster contains 2000 spherical carbon particles, and each particle
has a

diameter of 20 nm.
ans : a) 0.0445   b)0.42   c)3.79×10^5
7 A small truck has a four-cylinder, 2.2-liter CI engine that operates on an air-standard Dual 21. At a speed of 2500 RPM, the engine has a volumetric efficiency 7 92 % . At this operating condition, 0.4 % of the carbon in the fuel ends up as soot in the exhaust. In addition, there is 20 % additional carbon soot from the lubricating oil. The amount of soot is then increased by 25% due to other com- cycle using light diesel fuel at an average AF on the carbon. Carbon density pc ponents condensing 1400 kg/m2 Calculate: (a) Rate of soot put into the environment. [kg/hr (b) Chemical power lost in the soot. (Consider the entire mass of soot as (e Number of soot clusters exhausted per hour. Assume that an average cluster contains 2000 spherical carbon particles, and each particle has a diameter of 20 nm. carbon.) [kW

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