Stupid Simple Small Engine Fuel Injection System: Difference between revisions
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**It is somewhat in-between a “dumb” [[Carburetor]] system, and a modern “smart” system like a [[Speeduino]] with tons of sensors / [[Dual Injection]] etc | **It is somewhat in-between a “dumb” [[Carburetor]] system, and a modern “smart” system like a [[Speeduino]] with tons of sensors / [[Dual Injection]] etc | ||
*Low Complexity/Points of Failure, but just smart enough to work reliably is the design goal | *Low Complexity/Points of Failure, but just smart enough to work reliably is the design goal | ||
*As per3:36 in the video, | |||
*It DOESN’T HAVE: | |||
**A [[Crankshaft Position Sensor]] | |||
**A [[Throttle Position Sensor]] | |||
**An [[Air Intake Temperature Sensor]] | |||
**[[Oxygen Sensor]] | |||
***This MAY be useful enough to add in in their opinion | |||
*It DOES Have: | |||
**A [[Manifold Absolute Pressure Sensor]] | |||
**A [[Thermal Time Switch]] ( [[Thermal Fuse]] ? ) for [[Cold Start]] detection+adjustments | |||
**A Delay Based Startup Enrichment | |||
=Components= | =Components= | ||
Revision as of 19:17, 5 April 2026
Basics
- S3 EFI
- An Electronic Fuel Injection System Developed by Robot Cantina (YouTube Channel) / Jimbo that is based off of the Bosch CIS System
- It is somewhat in-between a “dumb” Carburetor system, and a modern “smart” system like a Speeduino with tons of sensors / Dual Injection etc
- Low Complexity/Points of Failure, but just smart enough to work reliably is the design goal
- As per3:36 in the video,
- It DOESN’T HAVE:
- A Crankshaft Position Sensor
- A Throttle Position Sensor
- An Air Intake Temperature Sensor
- Oxygen Sensor
- This MAY be useful enough to add in in their opinion
- It DOES Have:
- A Manifold Absolute Pressure Sensor
- A Thermal Time Switch ( Thermal Fuse ? ) for Cold Start detection+adjustments
- A Delay Based Startup Enrichment
Components
Fuel Tank
Fuel Pump
Fuel Injector
Electronics
- Arduino Uno
- Relay for Fuel Pump
- SSR for the Fuel Injector
- Potentiometer/Hall Effect Knob for AFR Trim
- E-Stop
Internal Links
External Links
- A Video by the YouTube Channel “Robot Cantina” Titled “S6 Ep8 We build a simple fuel injection system for the 212cc Predator ( ‘’’~30 Minute Watch’’’ )
- Mentions the 212cc Predator Engine