Standard Modes of Operation

Road Speed Control Mode

A standard feature of chassis dynos, the operator may manually set the desired Speed as required and the vehicle will be held at that point regardless of throttle position.  The Mainline/DynoLog Dyno offers unsurpassed fine tuning, as the operator may control speed in increments as small as 0.1 km/h. Road Speed Control Mode is very useful for mapping of aftermarket programmable Engine Management Systems, or for general diagnostics where operator controlled, variable speed is required.

The entire test run is set up in increments of Speed and the Dynamometer's control system will adjust the load holding requirement automatically at each requested speed point.

At any time, a single operator key press brings the pre-set demand speed back to the current road speed.  A further operator single key press to releases the demand speed and allows it to increment back up to the maximum speed.  While incrementing, a further operator key stroke will pause the demand speed at the current speed.

RPM Control Mode - Tacho Trim

Other dyno manufacturer’s Tacho Modules typically only capture RPM data for plotting on a customer printout, whereas our Engine Tachometer Module does that and more.  A further reason why the Mainline/DynoLog Dyno is light years ahead of the rest is that the operator has the option to manually set the desired Engine RPM as required and the vehicle will be held at that RPM regardless of throttle position.

The operator may control RPM set points in increments of 50, 100, 150, 200, 250 and 500RPM steps. The Tacho Trim function makes the mapping of aftermarket programmable Engine Management Systems a breeze.

Just dial up your desired RPM and the dyno will do the rest. The operator can specify the tacho input source (Off, Tacho, OBD-II, ECU or Gas Analyser) and configure the system to allow for manual/automatic transmissions and specify the tacho speed steps and sensitivity. No more continually varying the Dyno Demand Speed as you progress through the various MAP sites.  Just select your desired RPM and the dyno will do the rest!

Static Test Mode

Used for automatic or user-defined data snapshots.When OEM ECU tuning, a different approach must be undertaken whilst using a Chassis Dynamometer,compared to tuning Aftermarket Replacement ECUs (ie. Motec, Haltec, Autronic etc.). Whereas the Aftermarket Replacement ECU enables Static Live Tuning of all RPM/Load Sites, the OEM ECU tuner has to edit the required Maps/Tables, then Flash the Tune File directly to the vehicle (in some cases to an intermediate box, then transfer this to the vehicle). Some variations of “Flash Tuning” are quite time consuming in the process of “Flashing” the ECU, in some cases it takes over 10 minutes to undertake the procedure, so in this case, the Tuner only gets 4-5 possible attempts per hour to make and verify a change on the dyno.

In the case of OEM ECU Tuning, it makes sense then to have a Chassis Dynamometer that can maximise the results achieved from time spent on the dyno.  Why spend 6 hours when the same task can be done in 2 hours or less? Here the Mainline/DynoLog Chassis Dynamometer excels where other brands fail, giving the Tuner a whole host of necessary and convenient Data Inputs that speed up the Tuning process, as well as specially tailored testing functions that can be used for rapid data capture of all required inputs. Where Live Tuning cannot be undertaken, it is necessary to log a host of parameters whilst simulating driving the vehicle on the road. The Mainline/DynoLog system has a very handy Static Test that enables the user to run through various Load Sites or RPM Sites and log the relevant data. The Static Test can be configured to capture data at predefined Time Intervals (1 sec, 2 sec, etc), or any User Defined Time Intervals and to view, save, and later analyse and print the snapshot data.

Background Logging Test Mode

The Mainline/DynoLog also has the ability during steady state testing, to continually log test data to a .CSV spread sheet for later analysis if required.

Ramp Test Mode

Ramp Up and Ramp Down tests are available.  A combination of the Ramp Up and Ramp Down tests can be useful for calculating inertia losses.  The operator may pre-program the Pre-Start Speed, the Start Speed, the Ramp Rate, the End Speed, the Delay at the Top, the Ramp Down Rate, and the Finish Speed.  The operator can specify the Ramp Rate as km per hour per second, and a calculation based off RPM per second can also be shown. The Ramp Test End Point can be manually triggered at any time by operator intervention, or automatically triggered by pre-selected Road Speed or Engine RPM.

Whether terminated automatically or by operator intervention, at the end of each ramp test the dyno applies load to safely ramp down the vehicle at an operator-selected rate.  Markers can be added dynamically during a Ramp Test to record observed events such as knock, miss fire, vibration etc occurring during the test.  All data captured is recorded for printing as a ramp test report and may be saved to the Customer/Vehicle database.

The Mainline/DynoLog system dynamically graphs Power and Torque over Vehicle Speed or Engine RPM.  All graphing functions can be selected and configured by the operator using the wireless keyboard/trackball controller from within the vehicle.

Auto Step Test mode

The Dynamometer automatically progresses to each programmed Speed increment as set by the operator. The operator may pre-program the Start Speed, Settling Time, Set Points for each Speed Step, Sampling Time at Each Speed Site, the Speed Step Rate and the End Speed for each test.

Graphs may be either manually or automatically scaled.   All data captured at each set point can be printed as a step test report and may be saved to the Customer/Vehicle database.

Speedometer Check Mode

Operator programmed and prompted Speedometer check allows the operator to advance quickly through each Speed Point, with live indication of Actual Speed, Speedometer Error and Error Percentage.

Printed Speedometer Test results also include Total Average Speed Error and Error Percentage.

Odometer Check Mode

The operator programmed and prompted Odometer check allows the operator to check a vehicle’s odometer accuracy with an accuracy level of 1 metre per kilometre.  The operator specifies the distance of the test and drives the vehicle for that distance according to the vehicle odometer.  At the conclusion of the test the system provides the Actual Distance and Percentage Error.

Graphing & Printing

Test data can be stored to disk, printed or recorded and recalled to screen. Previously stored graphs can be recalled and a current live graph can be viewed over the stored graph.  Your company logo can be easily added to the main screen and a wide variety of reports can be printed to maximise your workshop's image. Choose from full colour single graph or multi-run graph-over-graph displays.  Graphs may be manually or automatically scaled.

Graph test reports include a colour XY plotting report, and a full data logging report showing such data as Engine RPM, Power, Torque, Speed, Oil Temperature, Boost, Air Intake Temperature, and Air/Fuel Ratio.  When using the Automatic Weather Station, vital atmospheric information such as Barometric Pressure, Relative Humidity, Ambient Temperature and Correction Factor are also saved with each report, and power readings are automatically corrected to the prevailing atmospheric conditions.  Watermarks or colour photographs can be added to the graph background with just a few key strokes.

Test comments may be displayed on the Graph when it is printed. The graph scaling is fully configurable by the operator, or auto scaling can be applied.  All screens can be captured easily for coloured screen image printing if required.

Any of the 500+ data channels can be graphed and printed or generate PDF files.  Raw data from any of those input channels can also be viewed, analysed and printed.

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