MembersPage/GasEngine/AutoDerivativeSmallGasEngine (2014-02-25 08:38:47)

Small (appr 4 liter) gas engine, 4 cylinder, 1500 RPM

(some comments on this page are Hungarian)

While 1st serial port is connected to VemsTune,

2nd serial port acts as a "modbus RTU slave" and accepts commands from a "modbus RTU master" device.


Grounds

See MembersPage/PhatBob/UserGuide


Supply +12V or +13.5V (not +24V !!!)


Sensors

5 EGT (order comment: "5 EGT inputs") 4 individual + 1 mixed

CLT Coolant Temperature (hengerfej víz temperature)

MAT Manifold Air Temperature (gázkeverék temperature osztócsoben) 0-5V signal

TPS (folytószelep pozíció)

MAP : Manifold Absolute Pressure, pneumatic connector (szívócsonyomás, abszolút 0-300 kPa ?)


Trigger input

Warning: since this engine has primary trigger on the camshaft, not the crankshaft as usual, 6-1 is not suitable, only 8-1 or 12-1 or 12-2 (or some even higher toothcount).

EC36/28: +5V output for HALL sensors (max 50mA recommended)


Ignition outputs (1,3,4,2 firing order)

4A biztosítékon át a gyújtótrafó másik vége tápfeszre (+12V vagy +24V DC) van kötve

Starter config


IAC PWM output

Possible PWM voltage for Woodward 5-32VDC

  • TPS in EC36/1 0,75-4,25VDC CORRECT??
  • 0-90% (or 10-90% )
  • EC36/pin11 (ign4) 0/5V (max: 1.1mA)
  • alternatively: EC18/pin4 (Stepper A) 0/12V

Woodwars spec:

PWM Command Input (+PWM at pin 11, PWM ground at pin 3)—This actuator

can be configured to handle a PWM signal from a high-side or low-side opencollector

or open-drain source, as well as from a push-pull (customer pull-up)

source. The necessary pull-up and pull-down voltages to accommodate the

open-collector sources are handled within the L-Series actuator. Nominally, the

frequency of PWM is 1 kHz, but it will handle the full range of 300 to 1500 Hz.

See Figure 3-5 below, which describes the possible input types and

configurations for the PWM input.


Mixture valve

Alternatively:


2nd RS232 for CRC protected special commands

2nd RS232TX (EC18/14)

2nd RS232RX (EC18/15)

GND

2nd RS232TX (EC18/6)

2nd RS232RX (EC18/12)

GND

Examples:

(02) 06 00 XX VV 00 (CRC CRC)

XX table:

read all runtime vars command

Example: (02) 44 (00 e3)

where 02 is modbus addr, and last 2 bytes is CRC. ('D'=0x44 is actual command)

Register/Address for reading/writing

read:

- lambda érték

- fojtó állás

- EGT1, EGT2

- knock values 0..7

- errors, trigger error (hibák)

- MAT manifold temp

- sparkadv gyújtásszög

- RPM (fordulatszám)

- lambda target

- individual power (gyújtás kihagyás)

- iac duty (fojtó parancsolt)

write:

- alap gyújtásszög

- lambda SP

- fojtó parancsolt


K-Thermocouple


WBO sensor connection


Digital inputs


Digital output


Knock sensor 1pcs.


Base Config made; Configured for:

http://www.vems.hu/files/MembersPage/GasEngine/AutoDerivativeSmallGasEngine/v3.3_u008398-A-2014.02.21-09.47.20_cell_4cyl_gas_engine_base_1.2.23.vemscfg