Week-4 Challenge WOT Condition Part-2
We can switch between engine model types based on our application. Dynamic engine models are suitable for designing control, estimator, and diagnostic algorithms that depend on dynamic subsystem states, for example, in closed-loop AFR control algorithm development. Mapped engine models are suitable for analysis and design activities that do not require engine subsystem dynamic characteristics, for example, in engine and transmission powertrain matching analysis for fuel economy, emissions, and performance tradeoffs.
SOL2
Conversion from Cubic Meter to gallon (m^3 to gallon),
As we know 264.172 US Gallons is 1000L
The reference model taken here for consideration is HEV and as it operates on both the Battery and the Fuel Injection Engine.
The final output/Fuel Efficiency is calculated by keeping in consideration of the Battery Output, Fuel Output and the Vehicle Speed/Kilometres Driven. Therefore the fuel efficiency is calculated and it is converted after the saturation thus the FE is calculated
Factors are considered to model fuel flow
1.Vehicle Speed
2.battery power
3.fuel flow
sol 3
case 1: when grade angle is 0 and wind velocity is 0
Case 2: when grade angle is 8 degrees and wind in x direction is 10 m/s
case 1 and case 2 0utput respectively
Conclusions:
In case 1st the velocity of vehicle is trying to achieve the speed of WOT response.The steady state speed is same i.e equal to 60 miles per hours but in case second speed achieved is not same.
Whenever a brakes are applied drastically their is a increase in SOC of battery as represented in graph
Last graph represent represent Fuel economy in miles per gallons
Sol 4 Pure Electrical Vehicle
Conclusions:
Velocity of vehicle get reduced as grade angle and wind is considered so their is a variation in actual speed and driving cyle speed. In this we observe a dip in the battery current to negative value , so the real power becomes negative and provide regenarative action of brakes.
Increment in battery SOC is also very small at the instant of braking. Motor Torque also becomes negative when brakes are applies as shown in graph 3rd.