A two-liter, four-cylinder, open-chamber SI engine operates at 3500 RPM using stoichiometric gasoline. At this speed, volumetric efficiency is 93%, combustion efficiency is 98%, indicated thermal...

A two-liter, four-cylinder, open-chamber SI engine operates at 3500 RPM using stoichiometric gasoline. At this speed, volumetric efficiency is 93%, combustion efficiency is 98%, indicated thermal efficiency is 47%, and mechanical efficiency is 86%.

Calculate:

(a) Brake power. [kW]

(b) bmep. [kPa] (c) Amount of unburned fuel exhausted from the engine. [kg/hr]

(d) bsfc. [gm/kW-hr] Compare these results with those of Problem 8.