Ps

When Toyota released the new 2.5-litre TNGA Dynamic Force engine in 2016 , they increased the compression ratio from 10.5to 13 and the tumble ratio from 1.5to 3. Answer the following questions. a. Based on the Otto Cycle efficiency, how much more efficient is this new engine due to the compression ratio increase? Assume the specific heat ratio of air =1.4. b. A Toyota engineer further increased the compression ratio to 14 to match it to that of their benchmark Clengine. Calculate the theoretical maximum thermal efficiency of these two engines. Assume the cut-off ratio is 2.1. required combustion efficiency of the diesel benchmark engine if the combustion efficiency of the Dynamic Force SI engine is 82%? d. The intake ports and valves of the Dynamic Force engine are designed to achieve much stronger tumble flow. Provide a brief written answer regarding how this high tumble engine design contributes to an improved engine efficiency. e. This SI engine operates at near stoichiometric charge conditions to maximise the conversion efficiency of three-way catalytic converters. Provide a brief written response about the charge condition required for the maximum brake power and

texted answers only no

the minimum sfc, and explain why.