User Guide

Dyno2000 Advanced Engine Simulation—79
Opens Cam Math Calculator
Cam Math Calculator
main Component Screen. This will establish how the timing points are applied to the
simulated engine by the Calculator.
Important Note: The Cam Math Calculator screen indicates whether the displayed
specs used in cam-math calculations and, potentially, applied to the simulated en-
gine are based on the 0.050-inch or Seat-to-Seat timing methods (see photo, page
80). You can switch between these timing methods by closing the Cam Math Cal-
culator and choosing a timing specification from the Cam Specs @ field in the
CAMSHAFT category. Remember, whenever you have a choice of cam specs,
always use seat-to-seat timing values; the simulation results will have the highest
accuracy.
The Cam Math Calculator is activated by selecting Cam Math from the TOOLS
drop-down menu or by clicking on the Cam Math Calculator button on the Toolbar.
If IVO, IVC, EVO and EVC cam timing values were already entered in the CAM-
SHAFT category (on the main Component Selection Screen), the Cam Math Calcu-
lator will display the lobe-center angle, intake centerline, and duration values for the
current cam and accept any changes. On the other hand, if you have not yet entered
valve-event timing, the Cam Math Calculator will display blank fields, and allow the
input of centerline, duration, and valve-lift specs. As you fill in the fields, the corre-
sponding IVO, IVC, EVO and EVC points will be calculated and displayed. You may
then either accept the calculated values and transfer them to the CAMSHAFT cat-
egory (on the Component Selection Screen) by pressing the Apply button or discard
Starting The Cam Math Calculator
The Cam Math Calculator is an easy-
to-use tool that converts LCA, ICA and
duration values to the IVO, IVC, EVO,
and EVO timing points needed to
perform a simulation. Open the
calculator by selecting Cam Math from
the Tools menu or clicking on the
Cam Math Calculator button in the
Toolbar.
Before you open the Cam Math
Calculator, select either the Seat-To-
Seat or 0.050-inch cam timing
methods. Remember, seat-to-seat
event timing will produce the most
accurate simulation results.
Cam Timing Method Menu