MembersPage/JasonRussell

I live in Burlington, Vermont USA. Just for fun, here's a link to a webcam near my house. http://www.hazecam.net/burlington.html

Personal car:

MembersPage/JasonRussell/MazdaRX7

My brother's car that is going turbo

MembersPage/JasonRussell/HondaDelSol

A rally/hillclimb car I installed and take care of

MembersPage/JasonRussell/SubaruSTi

1988 Mazda RX7 Turbo

Here is a picture of the crank angle sensor: Notice the 24 tooth wheel at the bottom(crank position) and the 2 tooth wheel at the top(of the Z axis). The 2 tooth wheel is the crank TDC (home position) for Rotor 1. This assembly turns at 1/2 crank speed like a distributor would hence it's 30 degrees of crank rotation per pulse with a seperate pulse for home position.

rx7cas.jpg

As for the coils, the Haltech guys use 4.5 - 5ms dwell time on the stock coils, so I figure I'll start there. The split trailing should be fairly easy. Although it will most likely require firmware changes (#ifdef ROTARY).

Visit my website for more info on my cars. http://www.6speed.org


I am starting to prepare for the install into my RX7. Here is a pic of a board with the way I populated the components. I describe below the pic.

genboardv31_top_rx7.jpg

A = Rotor 1, primary Injector

B = Rotor 2, primary Injector

C = Rotor 1, secondary Injector

D = Rotor 2, secondary Injector

WB = Wideband switch of course

L = Wastespark coil for leading (bottom) sparkplugs

T1 = Coil driver for trailing (top) plug on rotor 1

T2 = Coil driver for trailing (top) plug on rotor 2

I'll be using both VR inputs for the above sensor, knock eventually... any additional suggestions?

Q: Where is the switch for the fan relay on v3? I don't see it on the EC pinout.

pick one (and we should definitely have some standard, so check the sch and check the code; code is quite flexible, eg. mik uses an ign259 channel, because he started his engine before he had TPIC6A259DW chip).

Q: What is recommended to use for the transient supression diode near the power supply?

U$5 is 1K5E18 or 22 (18 or 22V) throughole transient suppression diode, it's legs are very thick. It's in the rescue kit for some time now. Not a big problem if you don't mount it.

Q: Is there a predetermined use for JP1 (SDA/SCL) or are they free outputs? I'm trying to determine what pins to bring out to an external connector for future use.

A: These are free, they are wired to the I2C pins of the MCU and there is lots of useful I2C devices.


WBO2 test/setup

Here's the config on my controller now (this was used to make the wbo2logs posted)

wbo2_warmup_ramp=A0

wbo2_warmup_target=FF

wbo2_abs_limit=E4

wbo2_limit_maxt=A0

wbo2_fallback=60

wbo2_retry_t=06

wbo2_edgetime_corr=BA

wbo2_edgetime_min=50

wbo2_ri_target=96

wbo2_nernstdc_target=8D

wbo2_pump_pw_zero=65

wbo2_calibration=D0

wbo2_heater_pid_kp=46

wbo2_heater_pid_ki=10

wbo2_heater_pid_kd=1A

wbo2_heater_pid_ilimit=80

wbo2_pump_pid_kp=2E

wbo2_pump_pid_ki=1D

wbo2_pump_pid_kd=08

wbo2_pump_pid_ilimit=84

wbo2_ri_confidence_scale=80

Measured values:

  • If the IN+ (pin3) is about 4V, and OUT (pin1) is close to +power (eg. 10..11V) than too much current is drawn by something loading pump-. You can make the 270 Ohm resistor (pin1 -> pin2) smaller but it worths to check where the current goes.

Solution: Put the 270 ohm resistor on the board. Works wonders. ;-) The GenBoard/Manual/WBSensorConnection page was misleading (saying they are all auto-placed) so I changed it for that component since all boards I have in stock are missing that R.


Here is a log I took tonight of a full warm-up. Any comments on this? (it's still greek to me)

http://www.vems.hu/files/MembersPage/JasonRussell/8_15_wbo2logs.tar.gz

This is broken!!

The documentation is lacking on finalizing the setup of the wbo2, so I hope changing that will help solving my own problems.