id0140z5988100
Outline
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Block Diagram
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Operation
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| Control range |
Control description |
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|---|---|---|
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Normal injection
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Low engine speed, low load
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For the purpose of reducing engine knock occurring during combustion and to assure ignitability, the number of fuel injections is increased to a maximum of 5 times.
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High engine speed, high load
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Output and fuel consumption is improved by reducing the fuel injection time and injecting a higher amount of fuel over a fewer number of injections.
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FAST HEATING CONTROL
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When the engine coolant temperature is low and the cabin heating performance is insufficient, 2 additional follow-up injections are performed to increase the exhaust temperature from the after-burn.
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DPF regeneration control
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During DPF regeneration, fuel injection is performed at a slower timing than normal to remove particulate matter (PM) accumulated in the diesel particulate filter.
1. Follow-up injection is performed after the main injection. (increases exhaust pipe temperature)
2. Post injection is performed 1—5 times
* (increases exhaust temperature necessary for combustion and removal of particulate matter (PM))
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Fuel-cut
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During fuel-cut operation, fuel is not injected by the fuel injection amount control.
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Regarding engine oil dilution from post injection
| Item |
Engine oil dilution |
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|---|---|---|---|
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Engine oil dilution amount reference
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Oil level gauge position
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A
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B
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C
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Center display
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No problem
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“Engine Oil Pressure Inspection Required”
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Check engine light
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—
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—
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Engine oil warning light
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Illuminated
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Wrench indicator light
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—
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Illuminated
*1
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DTC recorded in PCM
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P253F:00
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P252F:00
*1, P253F:00
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DPF regeneration control range (auto DPF regeneration control)
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DPF regeneration control range (auto DPF regeneration control)
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User action
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Vehicle servicing at Authorized Mazda Dealer
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Vehicle servicing at Authorized Mazda Dealer
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Engine oil data reset after engine oil replacement
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Action taken by servicing at Authorized Mazda Dealer
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Action A
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Action B
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