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Engine Monitor

Real time graphic readout of critical engine performance parameters.

Jan ZumwaltJan Zumwalt
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  • Discussion 6
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  • Jan ZumwaltJan Zumwalt
  • swrothertswrothert

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This project is submitted for

  • The 2016 Hackaday Prize
  • Get Started: Design Your Concept

This project was created on 03/18/2016 and last updated 3 years ago.

Description

It is desirable to know the performance of combustion engines in order to make wise decisions regarding operating habits, maintenance, and design impact.

This project is designed to create custom software that utilizes off the shelf inexpensive industry standard existing hardware. Standard sensors and a small color LCD or RGB monitor will display critical engine performance values including:
RPM
Accelerometer and compass
Fuel pressure
Fuel flow/consumption
Estimated fuel/range remaining
Combustion mixture
Manifold pressure
Cylinder head temperature
Exhaust gas temperature
Exhaust gas pollution
Oil temperature
Oil pressure
Air temperature & humidity
charging volts & amps

Customizable for 1 to 6 cylinder engines. Estimated cost less than $99.

Project Logs
Collapse logs

  • Mixture Oxygen Sensor

    Jan Zumwalt • 04/05/2016 at 22:21 • 0 comments

    Price: $4

    Part: M960909
    Type: 4 wire platinum oxygen sensor
    Product Fit: Direct Fit
    Connector Gender: Male
    Hex Size: 7/8 in.
    Mounting Style: Threaded-in
    Thread Size: M18-1.5
    Warranty: 1-year, unlimited-mileage warranty
    Wire Length: 22.75 in.

    http://www.carparts.com/details/Replacement/Oxygen_Sensor/M960909.html?TID=gglpla&origin=pla&gclid=CM2v-_HC-MsCFUiGfgod5NAOHw&redirect=1

  • Accelerometer, compass, air pressure, temperature

    Jan Zumwalt • 04/01/2016 at 07:49 • 0 comments

    $7 - GY-87 10DOF includes accelerometer, compass, air pressure, temperature

    gyro and accelerometer MPU6050 3 axis
    digital compass hmc5883l 3 axis
    pressure and temperature bmp085 1 axis
    interface - i2c bus

    Code I tested for proof of concept https://github.com/richardghirst/PiBits/tree/master/MPU6050-Pi-Demo

    Purchase Source

    http://www.aliexpress.com/item/GY-87-10DOF-Module-MPU6050-HMC5883L-BMP180-GY87-Sensor-Module/1986963611.html?spm=2114.01010208.3.2.mqhaup&ws_ab_test=searchweb201556_0,searchweb201602_1_10036_10035_301_10034_507_10032_10020_2010016_10017_10005_10006_10021_10022_401_10018_10019,searchweb201603_9&btsid=6cc51804-d95d-4fd9-8265-85f72fdd3bcf

  • Oil & Fuel Pressure Transducer

    Jan Zumwalt • 04/01/2016 at 07:26 • 0 comments

    Specifications:

    $10 price

    Part #SKU237545
    Working Voltage: 5VDC
    Output Voltage: 0.5-4.5 VDC
    Sensor material: Carbon steel alloy
    Working Current: ≤10 mA
    Cable length: 19cm
    Working Pressure Range: 0-175psi (0-1.2 MPa)
    The Biggest Pressure: 2.4 MPa
    Destroy Pressure: 3.0 MPa
    Working TEMP. Range: 0-85 degree
    Storage Temperature Range: 0-100 degree
    Measuring Error: ±1.5 %FSO
    Temperature Range Error: ±3.5 %FSO
    Response Time: ≤2.0 ms
    Cycle Life: 500,000 pcs
    Stainless steel is durable, sealed waterproof line

    http://www.aliexpress.com/item/Pressure-Transducer-Sensor-Oil-Fuel-for-Gas-Water-Air/32523806518.html?spm=2114.01010208.3.2.DqUaS5&ws_ab_test=searchweb201556_0,searchweb201602_1_10036_10035_301_10034_507_10032_10020_10017_10005_10006_10021_10022_401_10018_10019,searchweb201603_9&btsid=ab83ec34-d7a0-4e73-ac47-d5eaf2bef720

  • Outside Temperature & Humidity

    Jan Zumwalt • 04/01/2016 at 07:13 • 0 comments

    $1 - The DHT-11 will provide outside temperature and humidity.

    http://www.aliexpress.com/item/1pcs-DHT11-Digital-Temperature-and-Humidity-Sensor/32246685842.html?spm=2114.01010208.3.2.FZ68t8&ws_ab_test=searchweb201556_0,searchweb201602_1_10036_10035_301_10034_507_10032_10020_10017_10005_10006_10021_10022_401_10018_10019,searchweb201603_9&btsid=0e326206-f43b-4cd1-b5ea-df8c0ffdd9c0

  • 7" Data Monitor

    Jan Zumwalt • 03/31/2016 at 23:51 • 0 comments

    $28 - 2ch HD 800 x 480 7 Inch Color TFT LCD Monitor. I have owned one of these in the past and it works very well with micro processors.

    http://www.aliexpress.com/item/DU-NEW-and-High-Quality-HD-800-x-480-7-Inch-Color-TFT-LCD-Car-Rear/32553771346.html?spm=2114.01010208.8.80.HFOw9T

  • 1500F(800C) 1M K temperature probe

    Jan Zumwalt • 03/31/2016 at 09:50 • 0 comments

    Aliexpress has $2-3 K Type Nylon Braided 800C 6mm Screw Thermocouple Temperature Sensor 1M 3.3Ft. The other option was 2M ohm, but the selection was poor.

    Application:

    4 CHT, 4 EGT

    http://www.aliexpress.com/item/Hot-Sale-High-Quality-Stainless-Steel-High-Temperature-0-To-800-Degree-Thermocouple-K-Type-1000mm/32631426082.html?spm=2114.01010208.3.81.BgLA6r&ws_ab_test=searchweb201556_0,searchweb201602_1_10036_10035_301_10034_507_10032_10020_10017_10005_10006_10021_10022_401_10018_10019,searchweb201603_9&btsid=eeb69e66-6739-49d5-9b5c-14a00a8f58ad

  • Expanded External Analog IO

    Jan Zumwalt • 03/31/2016 at 09:29 • 0 comments

    Because this project will require considerably more IO ports that any micro-controller can provide, I identified the best IO expansion candidate as the MCP3008. It is a $4 16pin dip ADC with 8ch@10bits over SPI interface. Since SPI can be daisy chained and only requires 4 IO pins, perhaps 2 of them will serve all the analog interface needs.

    Application

    16ch total = 4ch EGT, 4ch cht, 1ch oil pressure, 1ch oil temp, 1ch fuel psi, 1ch fuel gph, 1ch manifold psi, 1ch air temp, 1ch humidty, 1ch air psi

    Code for proof of concept I tested http://www.hertaville.com/interfacing-an-spi-adc-mcp3008-chip-to-the-raspberry-pi-using-c.html

    Resources:

    http://ww1.microchip.com/downloads/en/DeviceDoc/21295d.pdf

    www.microchip.com/wwwproducts/en/en010530

    https://learn.adafruit.com/raspberry-pi-analog-to-digital-converters

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Per Bandsholm wrote 01/18/2018 at 12:03 • point

Hi, did you have overview or hardware ideas for measuring the RPM from the ignition system without damage the embedded electronic ?

  Are you sure? yes | no

Jan Zumwalt wrote 12/16/2017 at 02:48 • point

Here is a project update and I would like to thank everyone for following the Engine Monitor project - I am slooowly getting some winter work accomplished on it. I've been working on the ignition system so it can be started this spring. Pictures will soon follow :)

  Are you sure? yes | no

Jan Zumwalt wrote 06/14/2017 at 00:24 • point

I wanted to thank everyone who is following the Engine Monitor project. I just moved and had placed this project on the back burner this past year. I now have two VW engines that need to be prepared for flying next year and intend to finish this project this fall/winter. I have a wonderful new shop with the space and tools I need :)

  Are you sure? yes | no

Jan Zumwalt wrote 04/05/2016 at 22:19 • point

M960909

 $4 - 4 wire Ox sensor

http://www.carparts.com/details/Replacement/Oxygen_Sensor/M960909.html?TID=gglpla&origin=pla&gclid=CM2v-_HC-MsCFUiGfgod5NAOHw&redirect=1

  Are you sure? yes | no

sebwiers wrote 04/06/2016 at 17:55 • point

Just from what I've heard, I'd suspect that is a narrow band sensor intended for OEM type use, and it won't indicate correctly outside a narrow range near Stoic.  People doing engine tuning need a wide band sensor.  If that IS wideband (or can be made to work decently as such, maybe just indicating "to rich / to lean") then its a great price spec.

  Are you sure? yes | no

sebwiers wrote 04/05/2016 at 21:29 • point

This looks like it would be useful for all the same things an Air–fuel ratio meter would be good for, plus some... at much lower cost.  Can you actually pull that off?  I know the sensors don;t cost much and just put out voltage, so it may be possible.  If so, I'd love to have one, as would tons of guys who try to tune old motorcycles, etc.

  Are you sure? yes | no

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