The scenario
Design a P&ID for a Toyota Corolla evaporative emission control and fuel tank system, capturing fuel delivery, vapor capture in charcoal canister, and purge valve control loop.
What is in this drawing
Read the decisions behind it.
01
Used tank_atm for fuel tank and vessel_v for charcoal canister because catalog lacks automotive canister type
02
Modeled purge valve as valve_control with solenoid actuator and electric control signal
03
Added pressure transmitter and controller loop to modulate purge valve based on tank vapor pressure
Reuse for any vehicle EVAP system P&ID or fuel storage with vapor recovery.
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