Project 1

TORQUE CONVERTER

TRANSMISSION

Here gear input feeds into 1-d lookup table that defines what gear ratio is depending upon what desired gear ia, output of this block is gear ratio that is goining transmission output speed block being multiplied and using this process what transmiision speed is. this result which we get using for other calculation. then this fed into torque converter block. the output of this block torque also multiplied by transmission gear ratio, depending whether it is positive or negative torque we just assuming constant transmission efficiency .And this efficiency get multiplied by transmission output torque. Other transmission torque get multiplied by transmission gear ratio to get desired output transmission torque The question is how input transmission torque we achieved is essential going torque converter block. So input torque converter block is engine torque which is due to engine connectivity and other is transmission speed, in this torque converter block there is input engine torque and pump torque having taking difference whichnis result of net torque acting engine inertia in this engine dynamic block that generates acceleration and then while integrating we get speed. For speed ratio we dividing pump speed by turbine speed. after this speed ratio fed into 1d lookup table and k-factor. here torque ration defining takes place .Here in k factor block there is no defining Kfactor because of having infinity output when speed ratio is 1 that needs to be divided what pump torque is, so we run into such issues so it is easier to find c factor ,the advantages of c-factor is that the value is low its inverse square of k-factor so we get inverse of infinity 0 for speed ratio 1. based on speed ratio it generates output c factor . here c factor define as pump torque divided by square of speed before this engine speed in convert into rpm and is multiplied by 1d lookup table that gives you pump torque and this pump toque fed into engine dynamic block and then it calculates engine speed to do all this we need initial speed. Thats how we get transmission torque so this how we modelling transmission.

ENGINE

In engine block input to saturation dynamic as there engine speed fed into torque max curve and min torque curve having this working with together after limitation output torque we get in these bounded region. this torque and engine speed fed in 2d lookup table after this 2d lookup table this will be saturated with boundry applied region and multiplied by engine on so it get the information of having engine on and off and consumption of fuel is decreased in this condition.