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The ViPEC V88 is our most advanced ECU. This ECU has many features which allow it to be setup to suit various types of engine configurations. It has very flexible options over how the inputs and outputs are controlled, and allows the user to design their own functions to control all sorts of devices. Precise control of injectors and ignition angle are guaranteed at very low or high RPM or manifold pressures. A very high level of protection from interference and tolerance of trigger input errors has been built into this ECU, ensuring a smooth running engine even under the most demanding conditions.
Variable camshaft control for up to four camshaft. Control of camshaft position is very precise and time taken to advance from full retard to full advance is less the 1 second. Support for VVT and VANOS systems.
Closed loop control of idle speed and boost pressure makes for a "factory" idle speed stability, and precise control of boost pressure. Boost control can be setup to provide a different boost in each gear.
Knock control with suppot for two sensors. Knock control is user definable with fleaxile settings to allow precice knock control.
E-Throttle (Electronic Throttle Control).
HARDWARE:
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Main Connector 2 x 34 Pin waterproof.
USB data link connector plus CAN
Case, silver extruded aluminium, 169 x 172 x 42 mm (overall).
40 MHz Specialised Automotive Microprocessor.
Ignition control to 0.1 degree, fuel to 0.01 ms -
32 Bit Calculation -
10 Bit ADC Resolution
Max 20000 RPM
ECU to PC data link operates at up to 115k baud for fast cal down load & Log file upload (19sec typ for 112k bytes). 112k logging memory.
Internal Diagnostic light & optional remote light.
High efficiency power supply & output drivers for reduced power consumption and reduced self-heating.
Eight ignition outputs. Secquential to 8 cylinders and wasted spark up to 16 cylnders.
Software selectable mappable dwell or O/P pulse duration modes possible.
Eight coil dwell, software selectable.
Eight high current injector outputs.
Spare injector and ignition outputs can be used for output control.
10 Auxiliary Outputs
11 Digital Inputs
4 Temperature Inputs
11 Analog Inputs
3 Load Inputs (MAP, TPS, MAF)
2 Trigger Inputs (Reluctor, Optical or Hall Sensors)
2 Knock Inputs |
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Support for Reluctor and Hall effect crank and cam sensers.
Camshaft & crankshaft sensor inputs individually software configurable for hall effect & reluctor sensor types. Response speed is also software configurable for improved noise immunity.
Eleven general purpose digital Inputs with logic level sensitivity & pullup to +5volts. Useable for speed measurement. Switch I/Ps. Four are useable for Camshaft position measurement.
Knock control with support for two sensors.
Variable Camshaft control for up to four camshafts. VANOS and other VVT and VVT-i supported.
NTC or PTC air temp sensors, software selectable.
External 2.5 bar or 7 bar map sensor, software selectable.
Stepper motor idle control, two and three wire idle control.
Support for most idle valve type including 2 wire, 3 wire & stepper possible. Stepper pins can be used for spare outputs if not used for idle control.
Support for air flow meters.
Internal barometric pressure sensor.
Tacho & Diagnostic outputs.
E-Throttle (DBW, Fly by wire) option. No external controller required. The throttle control is built into the V88. |
SOFTWARE:
Launch Control (two step rev limiter based on vehicle speed).
Flatshift (change gears without clutch at WOT using standard gearbox).
Antilag (keep turbocharger on boost during gear changes) with turbo cooldown function.
Selectable ignition tables.
Up to 440 Zone Fuel Table with configurable load and RPM centres. MGP, MAP and load options.
5D Fuel Mapping.
Many correction tables for precision fuel & ignition adaption.
Digital Trigger Decoding.
Reluctor, Optical or Hall Sensors.
Programmable filtering and arming thresholds.
Configurable trigger patterns or preset triggering options, such as, Multi tooth, missing tooth, Subaru, Mazda, Nissan, Suzuki, Mitsubishi, Ford and GM and Motronic.
Support for two, three or four rotor engines with ignition split.
Dedicated idle control with additional settings for better adaption to changing operating condition and a more stable idle.
Dedicated Closed loop boost control, and other settings for stable boost pressures. A/C compressor control.
Cooling fan control.
General purpose control modules for O/P control. (use for variable fuel pump, power steering, inlet manifold air valves, extra temperature control devices etc) some of these are capable of PID feedback control.
Mapping via manifold pressure, throttle position, manifold and throttle or manifold.
Fly by wire throttle control will full control over the settings and operation.
Case Dimensions:
L = 167mm (6-1/2")
W = 172mm (5")
H = 42mm (1-5/8")
Weight = 0.7kg (1.5 lbs)
For documentation and help file go to this Page.
Specifications.
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Microcomputer |
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40 MHz Specialised Automotive
Microprocessor |
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Supply Voltage |
Normal operation
Safe limits |
6.2V to 23V DC continuous
+/- 24V (5 min)
+/- 80V alternator load dump (0.5 sec).
+/- 1000V inductive spike (10 usec) |
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Current Drain |
@ Engine idle
@ Max Engine Load |
< 1 Amp.
< 16 Amp (less depending on injector type and number. |
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Operating Temperature Range |
Min
Max |
- 40 deg C.
+ 85 deg C. |
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Engine Cylinder Number Settings |
Number of cylinders |
1, 2, 3, 4, 5, 6, 7, 8, 10 and 12 |
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Engine RPM Range |
0 to 20,000 RPM |
Engines up to 12 cylinders |
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Injection Duration Timing |
Min
Max
Accuracy
Settingresolution |
0.65 msec.
50 msec.
+/- < (10 usec + 1%)
0.1% approx. |
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Injection Timing |
Range
Accuracy
Settingresolution |
0 to 720 deg (crank angle).
+/- < (1.4 deg + 0.3 msec).
2.8 deg. |
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Ignition Timing |
Advance range
Accuracy
Settingresolution |
0 to 45 deg (crank angle).
+/- 0.2 deg (crank angle).
0.5 deg (crank angle). |
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Fuel Delivery and Ignition Mapping |
No. Load sites
No. RPM sites |
16 (max). Both Load and RPM sites
32 (max). are freely selectable. |
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Data Logging Memory |
Size |
4MB |
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Size |
L * W * H |
167 * 127 * 42mm |
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Weight |
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0.5 kg |
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Connectors |
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2 x 34 way 'AMP' water and dust proof socket |
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QuickTune Software Feature |
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The QuickTune feature is available for the V44 and V88 model ECU's.
The QuickTune will tune the engine with no input from the operator. The closed loop air fuel ratio table is used as the target air fuel ratio table for the QuickTune software. This table is setup with the required air fuel ratios at various RPM and Load points.
An exhaust gas analyzer or any other analyzer that provides a 0 to 5volt "corrected" output, is connected to any of the Analog inputs, this is used as the actual air fuel ratio input. As the engine is run through its various RPM and Load points the software will adjust the volumetric efficiency numbers in the main fuel table to achieve the target air fuel ratio.
At no time do you need to touch the keyboard on the Laptop.
After the tuning is complete the analyzer and 02 sensor is longer need. At any time after tuning is finished the values in the target closed loop table can be changed, and the engine will automatically run the new air fuel ratio, providing you do not make a change to the volumetric efficiency of the engine, e.g. fit a different camshaft, modify cylinder head etc...
If the engine is modified so the volumetric efficiency changes, then the analyzer and QuickTune software feature will be required again to re-tune the engine.
The QuickTune software is much faster then a good operator. It is not possible to manually tune as quick as the QuickTune . A typical engine will take less than 20 minutes to fully map on an engine dyno.
The accuracy of the QuickTune can be setup in the software from 0.5% to 5.0% accuracy. The default value is 2% accuracy, this is generally a lot more accuracy then most tuners manual tune engines.
You cannot directly connect a 02 sensor to the ECU to QuickTune.
Documentation on the setup and using the QuickTune feature. QuickTune.pdf
Overview
ViPEC QuickTune software provides rapid hands-tree tuning of Engine Air/Fuel mixtures. This automated operation frees the engine tuner, allowing total concentration on safe engine/dyno operation. On road tuning of motor vehicles is even possible.
This software uses a complex combination of math, including statistics, trigonometry and fuzzy logic to intelligently adjust the fuel delivery tables. Initial tuning is rapid usually occurring within 1 second. High precision can be achieved by allowing the QuickTune to operate for an extended time at each engine operating point. The operator has control over the balance between tuning speed and accuracy. Accuracy is ultimately limited by the accuracy of the attached Air/Fuel ratio measurement equipment.
The program provides visual indication of the tune status. Automatic and manual storage of tune status allows the user to monitor the tuning progress even if undertaken in several sessions. Tuning usually proceeds 2 to 5 times faster than possible by manual means. Fuel savings of as much at 90% have been reported. The considerable savings in engine life are obvious.
This program also has elaborate diagnostics facilities and allows simultaneous operation of the ECU internal data logger and external P.C data logging. | Back to top of page |