Table of Contents
What is normal Doc inlet pressure?
The DOC inlet pressure should be less than 9 kPa (1.3 psi) for a 1-Box ATS and 12 kPa (1.74 psi) for a Two-Box ATS.
What is a DOC inlet?
The DOC inlet temperature sensor (T1) was used to initiate HC dosing for active regenerations; the DOC outlet sensor (T2) was used primarily for temperature control; and the DPF outlet sensor (T3) was used for temperature diagnostics.
What should the DOC Temps be during a regen?
During the regeneration process, soot (carbon) is converted to carbon dioxide and ash. An internal DPF temperature greater than 932 °F is required for this process. In many engine applications, such as long-haul trucks, the engine duty-cycle keeps the exhaust hot enough to continually burn off the particulate matter.
What causes high DPF outlet temperature?
DPF Regeneration Process Adding late post injection pulses provides the engine with additional fuel to be oxidized in the DOC, which increases exhaust temperatures entering the DPF to 900°F (500°C) or higher.
What is the lightning temperature for Doc?
Air is a very poor conductor of electricity and gets extremely hot when lightning passes through it. In fact, lightning can heat the air it passes through to 50,000 degrees Fahrenheit (5 times hotter than the surface of the sun).
What temp should a DPF be?
The diesel particulate filter (DPF) is a component of the system. DPFs are designed to physically filter particulate matter (soot). A regeneration process removes the accumulated soot from the filter. An internal DPF temperature in excess of 932 °F is required for this regeneration process.
What should the DPF outlet pressure be?
It should be around 12.6 volts. Consult the manufacturer’s service manual to identify the signal, ground, and 5-volt reference and back-probe the wires.
What is the minimum exhaust temperature required for Doc operation?
Exhaust Temperature Data Logging To achieve verified levels of emissions reductions DOCs typically require a minimum exhaust gas temperature of 150°C.
How much heat is in a lightning bolt?
50,000 degrees Fahrenheit
In fact, lightning can heat the air it passes through to 50,000 degrees Fahrenheit (5 times hotter than the surface of the sun).
How hot does a semi truck exhaust get?
Executive Summary Page 8 2 Diesel Exhaust Emission System Temperature Test Table 1 shows that the maximum exhaust gas and exhaust surface temperatures are around 500 °F and in some locations above 1,000 °F.
What should the DPF intake and outlet temp be during regeneration?
How hot does exhaust get during regen?
Is a lightning bolt hotter than the sun?
In fact, lightning can heat the air it passes through to 50,000 degrees Fahrenheit (5 times hotter than the surface of the sun). When lightning strikes a tree, the heat vaporizes any water in its path possibly causing the tree to explode or a strip of bark to be blown off.
What is hotter than a lightning bolt?
A bolt of lightning is 5 times hotter than the surface of the sun. One thing hotter is when gold atoms are smashed together by the Large Hadron Collider, but only for a split second. Another thing hotter is a supernova.