iJoy SATURN 15W Pod System
The iJoy SATURN 15W Pod System is a dynamic pod kit, integrating a whopping 1100mAh rechargeable battery, zinc and glass chassis construction, and utilize coils from the iJoy SATURN Coil Series.
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What is an evaporator vent solenoid valve?
The EVAP vent solenoid valve controls fresh airflow into the EVAP canister. The valve is normally open. The control module commands the valve ON, closing the valve during some EVAP tests, allowing the system to be tested for leaks.
What is an EVAP purge valve?
The EVAP purge solenoid valve controls the flow of vapors from the EVAP system to the intake manifold. The purge solenoid valve opens when commanded ON by the control module. This normally closed valve is pulse width modulated (PWM) by the control module to precisely control the flow of fuel vapor to the engine. The valve will also be opened during some portions of the EVAP testing, allowing engine vacuum to enter the EVAP system.
What happens if the evaporative emission (EVAP) purge solenoid valve does not seal properly?
If the evaporative emission (EVAP) purge solenoid valve does not seal properly fuel vapors could enter the engine at an undesired time, causing driveability concerns. The control module tests for this by commanding the EVAP purge solenoid valve OFF and the vent solenoid valve ON, sealing the system, and monitors the fuel tank pressure (FTP) for an increase in vacuum. If the control module detects that the EVAP system vacuum increases above a calibrated value, DTC P0496 will set.
What happens if the evaporative emission vent system is restricted?
If the evaporative emission (EVAP) vent system is restricted, fuel vapors will not be properly purged from the EVAP canister. The control module tests this by commanding the EVAP purge solenoid valve ON, commanding the EVAP vent solenoid valve OFF, and monitoring the fuel tank pressure (FTP) sensor for an increase in vacuum. If the vacuum increases more than a calibrated value, DTC P0446 will set.
What is an evaporative emission system?
The evaporative emission (EVAP) system consists of the following components: EVAP Canister. The canister is filled with carbon pellets used to absorb and store fuel vapors. Fuel vapor is stored in the canister until the control module determines that the vapor can be consumed in the normal combustion process.
How small is an eovn leak?
The EONV diagnostic is designed to detect leaks as small as 0.51 mm (0.020 in) . The diagnostic can determine if a small leak is present based on vacuum or pressure readings in the EVAP system. When the system is sealed, a finite amount of pressure or vacuum will be observed. When a 0.51 mm (0.020 in) leak is present, often little or no pressure or vacuum is observed. If the test reports a failing value, DTC P0442 will set.
What vehicles have bad purge valves?
GM vehicles have been notorious for bad purge / vent valves.
Where are fuel vapors stored in an EVAP?
Storing Fuel Vapors. The vapor canister is the focal point of the EVAP system. When the engine is off, fuel vapors from the gas tank are stored in the canister. The canister contains activated charcoal, which traps the vapors until the engine is running, and conditions are correct for a vapor purge.
What is the component that stores fuel vapors from the gas tank?
This component, which is also known as a charcoal canister, stores fuel vapors from the gas tank.
How does a purge valve work?
Opening the purge valve creates a vacuum that pulls fresh air through the vapor canister. The fresh air picks up the fuel vapors and delivers them to the engine to be burned during the normal combustion process.
What are the components of an EVAP system?
The primary components found in a typical EVAP system include the following: Vapor Canister. This component, which is also known as a charcoal canister, stores fuel vapors from the gas tank.
How does the EVAP system work?
As was mentioned, the EVAP system prevents fuel vapors from entering the atmosphere. The system does this by trapping the vapors in a vapor canister, then “purging” the vapors into the engine when conditions are correct.
Why is the vapor canister closed?
Normally, the vapor canister is open to the atmosphere to allow fresh air to enter. The canister is only closed when the EVAP monitor is run (more on that later).
How many operations does an EVAP system have?
But the good news is that the system’s functions can be broken down into three primary operations: storing fuel vapors, purging fuel vapors, and self-monitoring. The EVAP system has three primary operations: storing fuel vapors, purging fuel vapors, and self-monitoring. Storing Fuel Vapors.
