Fuel Efficiency by Coasting in the Vehicle

Table 1

Values of the parameters used in the equations.

Parameter	Description	Numerical value
𝑚	Vehicle mass	2270 [kg]
𝑟	Wheel radius	0.326 [m]
𝑅tr	Gear ratio	3, 2.34, 1.85, 1.45, 1.00, 0.68
𝑅fd	Final driver ratio	3.28
𝐼ei	Moment of inertia of engine and torque converter	0.224 [kgm^2]
𝐼et	Moment of inertia of engine, torque converter and transmission	0.226 [kgm^2]
𝐼𝑤	Moment of inertia of the wheel	1.7 [kgm^2]
𝜌⋅𝐴⋅𝑐𝑑	Aerodynamic force coefficient	1.2 [kg/m]
𝐶𝑟	Rolling resistance coefficient	0.015
𝑛	Engine stroke	4
𝑉𝑑	Engine displacement volume	0.005 [m^3]
𝑔	Gravitational acceleration	9.8 [m/s^2]
𝜏𝑏	Lumped lag-servo valve and the hydraulic system	0.2
𝐾𝑐	Pressure gain	1
𝐾𝑏	Lumped gain for entire brake system	20 [Nm/bar]
𝑛𝑤	Number of the wheels	4