Suzuki Valve control
Test project for intake valve camshaft angle control. 1.3 / 1.6 Liter 4cyl engine used in Suzuki Swift, Ignis and other cars. Perhaps same trigger is used in other engines (Toyota ?) as well.
Fero uploaded the documents [here]
Important information:
- PWM signal for valve-adjust solenoid should be around 240 Hz
- higher duty advances the intake cam (as expected)
- Fero did some testing with the intake-control-hydraulic system, and drift was almost zero at 45% duty. But it never stabilizes, so feedback is essential.
- the camsync CMP signal is at the flywheel end of the cylinder head, HALL type with 3 pin connector
- Ground - measure in orig harness
- mid-pin sectrig HALL signal
- third pin (closest to sensor body): +5V HALL-supply voltage
Need Trigger PATTERN information for primary and secondary trigger so we can make configuration for it (and fw changes if necessary)
Any ideas ?
test-setup at Budapest University of Technology (and "Economics")
http://www.bme.hu/ the engine + shaft dyno located in the Jendrassik lab, 50m from the university's nuclear reactor.
It is a sponsored ECU v3.3 serialnr 2012
- was installed around 2008, running with 1.1.27
- guys installed a 18-1 crankwheel instead of using the factory (VR?) sensor. Camsync was not used
- Marcell upgraded firmware (actually to 1.1.89) so that sectrig log can be captured
- vemstune was very helpful with the upgrade, offered the auto-saved 1.1.27 config and upgraded to 1.1.89. Validate warned about the values it could not upgrade (eg. tooth_width2 was unused in 1.1.27). Setting tooth width=20 degrees fixed the warning
We'll test VVTI with this trigger first, than we should find the factory pattern (with scope or triggerlog), and implement that too.