Drew Technologies DashDAQ XL, Инструкция по эксплуатации, Страница: 29 / 52

29
SETTING THE PARAMETERS FOR ANY CALCULATOR DRIVER
Some calculators have some tunable parameters like: vehicle weight, fuel density, or engine displacement. Others may require you to
choose a signal for Vehicle Speed or Engine RPM. All of these decisions are ultimately your decision. You might specify Engine RPM from
GenericOBD2 connector but use a Vehicle Speed from a GPS for higher accuracy. Choose the setup that works best for your vehicle.
Figure 26: Parameters available for the Economy Calculator
To adjust parameters for a driver:
•
From the main menu tap on [Setup] >> [Devices] >> [Parameters]
•
Use [<] or [>] buttons to the Navigate to the “d-Economy Calculator” option
•
Select a row by tapping
•
Tap [Change]. Enter the number or text. Tap [Save] to confirm
DYNO CALCULATOR
DashDAQ can estimate instantaneous horsepower based on energy required to overcome inertia and accelerate (or decelerate!) the
vehicle’s mass. It looks at the change in kinetic energy ignoring air-resistance, rolling-resistance, and all forms of friction. During
acceleration this represents the engine’s power to move the vehicle forward. At cruising speed the numbers will show near-zero
because (ignoring air resistance) no power is needed to maintain speed. During deceleration the numbers will be negative representing
the force exerted by the brakes, resisting the forward-motion of the vehicle.
Make sure that the “Dyno Calculator” was selected when reflashing the firmware (section 0) and install the driver on an available port
(section 0).