Nissan Primera P11 1998, SR20VE
Nissan Primera P11 1998, SR20VE
Nissan Primera P11 with swapped SR20VE engine from Nissan Primera P12 20V. Naturally aspirated engine with the VVL (variable valve lift) technology at intake and exhaust camshafts. It also has a coil on plug ignition system. It produces 204 hp at 7200 rpm.
Last edited by Sergey89 on Wed Oct 01, 2014 4:37 pm, edited 1 time in total.
Re: Nissan Primera P11 1998
About the sensors and actuators used in the car.
CAS or CMPS (Camshaft Position Sensor) is used instead of crankshaft position sensor. It generates a 1 degre position signal and a reference signal. It has open collector outputs.
Output waveforms (with a distributor wheel):
Engine coolant temperature sensor
NTC type
Throttle position sensor
From ~0.5v at fully closed to ~4v at fully opened.
Idle air control valve.
PWM valve. f = 156.8 Hz, R = 10 Ohm
Ignition coil
With logic level inputs (not tested).
Variable valve lift solenoid
R = ~10 Ohm
CAS or CMPS (Camshaft Position Sensor) is used instead of crankshaft position sensor. It generates a 1 degre position signal and a reference signal. It has open collector outputs.
Output waveforms (with a distributor wheel):
Engine coolant temperature sensor
NTC type
Throttle position sensor
From ~0.5v at fully closed to ~4v at fully opened.
Idle air control valve.
PWM valve. f = 156.8 Hz, R = 10 Ohm
Ignition coil
With logic level inputs (not tested).
Variable valve lift solenoid
R = ~10 Ohm
Last edited by Sergey89 on Sat Oct 19, 2013 12:55 pm, edited 2 times in total.
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Re: Nissan Primera P11 1998
I have a wheel really close to yours in my collection - see attach
Do you have one reference signal per revolution or four reference signals - like a wider one and three smaller?
Do you have one reference signal per revolution or four reference signals - like a wider one and three smaller?
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- nissan_wheel.jpg (135.44 KiB) Viewed 24561 times
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Re: Nissan Primera P11 1998
Presented signals from the distributor wheel. This wheel looks like the COP wheel but with a different reference signal pattern.
Re: Nissan Primera P11 1998
The idle valve is simply controlled with a PWM signal.
Re: Nissan Primera P11 1998
О, у меня аналогичный мотор...
Re: Nissan Primera P11 1998
Видел твою тему на нисмо клубе
Re: Nissan Primera P11 1998
SR20DE first run on STM32F4 based ECU.
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Re: Nissan Primera P11 1998
That's a big day! Congratulations!Sergey89 wrote:SR20DE first run on STM32F4 based ECU.
Now that you have the hardware, we need to migrate you to the rusEfi software
PS: need some pics of the hardware
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Re: Nissan Primera P11 1998
Segrey89, does it run on Rusefi with ignition control?
Skype- max.mad486
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Re: Nissan Primera P11 1998
No, this is @'s own software. Please join me in my attempts to convince him to merge these two independent source codes... i think if eveyone PMs him, he will breakMad Max wrote:Segrey89, does it run on Rusefi with ignition control?
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Re: Nissan Primera P11 1998
In Soviet Russia, you mount prototype boards to a 2 by 4...
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Re: Nissan Primera P11 1998
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- cas_trigger_waveform.png (12.75 KiB) Viewed 23498 times
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- sr20det_sr20ve_trigger_waveform.zip
- (4.22 KiB) Downloaded 345 times
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Re: Nissan Primera P11 1998
Is that noise or signal on the upper channel?
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Re: Nissan Primera P11 1998, SR20VE
hm. what's the origin of that noise and how do you usually get rid of it? I see noise on both channels, btw. what's the physics behind of these two sensors?
Re: Nissan Primera P11 1998, SR20VE
It is a pair of optical sensors with open collector outputs. I do not know the cause of the noise. Maybe a bad ground.
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Re: Nissan Primera P11 1998, SR20VE
Is that with stock ECU, your own ECU or Frankenstein board? I wonder if I should be concerned or not
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Re: Nissan Primera P11 1998, SR20VE
Stock. Do not take this as a sensor noise. It's just the noise of the logic analyzer. Similar pulses are present on all channel.
Re: Nissan Primera P11 1998, SR20VE
such small slots on the outer diameter allow for better resolution? I wonder if that is necessary at all… Besides, what happens if they are contaminated with sludge and stop passing the light?
Re: Nissan Primera P11 1998, SR20VE
Position signal provides a 1 degree resolution. http://patentimages.storage.googleapis.com/pdfs/USRE34257.pdf
The case is sealed.
The case is sealed.
Re: Nissan Primera P11 1998, SR20VE
United States patent for a Japanese car? Decent resolution, and it doesn't need any crank sensors, I guess. Is it mounted outside the engine?
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Re: Nissan Primera P11 1998, SR20VE
Nice, we know the widths. I wonder if the centers are at 0, 90, 180 and 270?
By the way trigger decoder definition angle runs from zero to 720, so the widths would be 16, 32, 48.
By the way trigger decoder definition angle runs from zero to 720, so the widths would be 16, 32, 48.
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- nissan_cas.png (24.87 KiB) Viewed 23497 times
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Re: Nissan Primera P11 1998, SR20VE
As far as i know the rising edges of the reference pulses are positioned at 110 degrees before TDC. The width of the pulses is 32, 24, 16, 8. But really the rising edges of the reference signal are placed between the rising and falling edges of the position signal. So it's more like 31, 23, 15, 7.