P07222: FSAE Engine Management System For Electronic Fuel InjectionP07222: FSAE Engine Management System For Electronic Fuel Injection

Member Role

Erich Fiederlein Team Leader / Heat Transfer Analysis

Andrew Bloom Programming

Brandon Mancini Vibration Analysis

Greg Doelger IC Engine Analysis / 3-D Modeling

Kenvin Tung Digital Design / Embedded System

Brad Greene Hardware Design

Sponsor: RIT FSAE TeamFaculty Advisor: Dr. Alan Nye

Project DescriptionProject Description• Fuel and ignition control module for 4-stroke

gasoline engine.

Customer Needs Engineering SpecsEasy to tune and adjust User definable and intuitive interface

Programmable from a laptopCross platform, Zero configuration, USB

interface

Built in wideband o2 sensor Accurate to 0.1 AFR

Watertight, vibration proof, reliable and durable

Aluminum case with rubber dampnersPotted Sealed Connectors

Small and lightweightLess than 147mm x 105mm x 40mm

Less than 0.5kg

Data logging capability with run storageAbility to record past 20 minutes of sensor

activity

Flexible I/O ConfigurationInputs: 8 Analog / 8 Digital

Outputs: 16 Digital

Design ConceptDesign Concept

Design ConceptDesign Concept

Design ConceptDesign Concept

Risk Assessment

• Damage to customer’s components• Sensors

• Oxygen Sensor - Improper heater control circuitry

• Fuel Injectors - Running over 80% duty cycle will cause failure

• Engine

• Timing Inaccuracies - propagation delays in firing fuel injectors or ignition can cause engine malfunctions and even damage

• Damage to our components• Overheating - the case is water-tight and sealed, but the

components will generate 45W of heat

• Faulty Installation - a battery installed in reverse can destroy the electronics

Proposed Mitigation

• Damage to customer’s components• Sensors

• Computer simulations and substantial bench testing

• Engine

• Real time monitoring of outputs in the laboratory

• Damage to our components• Overheating

• Thermal analysis used in case development

• Monitor temperatures during extended test runs

• Faulty Installation

• Over Voltage and Battery Protection circuitry

Current State of Design

• Design meets all customer needs except• Auto tune, Wireless Telemetry, Knock Sensor, Integrated

Display, Traction Control are all out of the scope of this project due to time constraints.

• Design meets all engineering specifications

• Still on track for proposed budget of $1200• Budget COG (each) - $400

• Actual COG (each) - $362

• Mitigation• The system contains extra I/O and processing power to allow

future expandability

Project Schedule Milestones

• March 19th - PCB layout complete, and drawing package finalized, sensor input and processing routines begun

• March 26th - Electrical/Mechanical components and PCB ordered, start implementation of output timer routines

• March 31st - Functional prototype assembled, fuel and ignition map control added to program

• April 2nd - Electrical hardware testing, serial communication (USB) completed

• April 9th - Systems integration, thermal testing, GUI development resumes, design verification

• April 16th - Embedded application testing begins, if necessary design revision

• May 7th - Website constructed, electrical data sheet composed, design paper completed, poster fabricated

• May 18th - Project review

Any Questions?