by jenni1126 | Jun 28, 2023 | Uncategorized
Make: DetroitEngine: DD15 GHG17 (2017 & Newer)PID: N/ASPN: 51FMI: 10 Description: Intake Throttle Position Abnormal Rate of ChangeTroubleshooting:NOTE: This code sets when the Intake Throttle Valve (ITV) position is not within 30% of thecommanded position during...
by jenni1126 | Jun 28, 2023 | Uncategorized
Make: DetroitEngine: DD15 GHG17 (2017 & Newer)PID: N/ASPN: 51FMI: 2 Description: Intake Throttle Position Deviation ErrorTroubleshooting:DESCRIPTION:This code sets when the intake throttle valve position has a 15% deviation from the positioncommanded by the Motor...
by jenni1126 | Jan 10, 2023 | Uncategorized
LAYOUT OF THE EMISSIONS CIRCUIT The complex pollution control circuit that clutters the outside of a diesel engine built after 2010 makes it highway-compliant. On today’s highway diesels, DPF and SCR are virtually always utilized. Without SCR, one must rely...
by jenni1126 | Jan 10, 2023 | Uncategorized
EPA Compliance Instructions An SCR management strategy must include the following, per the EPA: Low DEF reservoir alerts are sent by the driver warning system. Measures to entice drivers: a cap on restarts, a fuel lockout mechanism, or engine deceleration until the...
by jenni1126 | Jan 10, 2023 | Uncategorized
SELECTIVE CATALYTIC REDUCTION (SCR) Selective catalytic reduction (SCR), a method of exhaust gas aftertreatment, is comparable to DPFs. An SCR system aims to “reduce” NOx back to nitrogen and oxygen while the DPF deals with particulate HC. SCR has been...
by jenni1126 | Jan 10, 2023 | Uncategorized
NONCATALYZED DPFs Occupational diesel engines with highway certification that are operated for extended periods of time at low engine load must have noncatalyzed diesel particulate filters (NC-DPFs). This kind of application is unique in that exhaust temperatures...
