User Manual

Chapter 12
BOSCH HDI EDC 15C2 INJECTION SYSTEM AND PARTICLE FILTER
96
II - SPECIFIC COMPONENTS
Specific features of the DW12TED4 engine:
• turbocharging pressure regulation,
• exhaust gas recycling regulation,
• pre-post heating,
• additional heating,
• air conditioning compressor cut-off,
• displaying faults,
• downgraded operating modes.
III - TURBOCHARGING PRESSURE REGULATION - FEATURE
The turbocharging pressure is reduced to prevent the turbocharger from being
damaged in the following cases:
• when the altitude is above 500 m,
• when the exterior air temperature is above 28°C (at the inlet manifold inlet).
During part of the EGR phase (low engine speed / low load), the turbocharging
pressure is controlled in an open loop to prevent any interference on the air loop.
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