Setting parameters

Procedure

Set parameters for the submodels, as shown in the following table:

Submodel	Number on sketch if any	Comment	Title	Value
MECRL01	3	Defines inertia of engine and computes response of engine to applied torques.	shaft speed port 2 [rev/min]	2500
moment of inertia [kgm**2]	0.2
Coefficient of viscous friction [Nm/(rev/min)]	0
MECRL01	4	Defines inertia of gearbox and computes response of engine to applied torques.	moment of inertia [kgm**2]	0.001
Coefficient of viscous friction [NM/(rev/min)]	0
RN001		Defines ratio of gearbox and adjusts speed and torque accordingly.	gear ratio	3.0
UD00	1	Defines engine torque in Nm	number of stages	3
duration of stage 1 [s]	0.1
output at end of stage 2	200
duration of stage 2 [s]	2
output at start of stage 3	200
output at end of stage 3	200
SIGUDA01	2	Defines the operation of the clutch. 1=fully engaged, 0=fully disengaged.	name of ASCII file	Expand the table entry to locate the clutch.data file:
MECFR2R0A		The clutch.	maximum Coulomb (dynamic) friction torque [Nm]	400
RSD00		Compliance of driveline.	stiffness [Nm/degree]	200
damper rating [Nm/(rev/min)]	1
CONS0		Define the overall transformer ratio between the drive shaft and the body.	Constant value	0.1
MECMAS21		Defines the linear inertia characteristics of the complete car.	endstop type	none
mass [kg]	1000
inclination (+90 port 1 lowest, -90 port 1 highest) [degree]	-10

These parameters imply that:

• The car is initially at rest but on a 10 degree slope.

• The engine speed is initially 2500 rev/min and there is a constant torque of 200 Nm.

• The clutch is disengaged for 0.1s and then is ramped to fully engaged in a further 0.25 s.