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US 2024/0077043 A1Published application
Leak Diagnosis for an Intake System
AssigneeBayerische Motoren Werke Aktiengesellschaft
InventorsDaniel ALBERER, Andreas KERSCHBAUMMAYR, Andreas LEYRER, Bernhard RAMSEBNER, Martin RANZMAIER
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Abstract
A vehicle drive has an internal combustion engine, an air conduit system, an exhaust system and a diagnostic unit for identifying a leak in the air conduit system of the internal combustion engine. The diagnostic unit is designed to carry out a method for diagnosing a leak in an internal combustion engine, including by determining mass flows in the air conduit system, and identifying a leakage mass flow.
Claims12
-11. (canceled)
A method for diagnosing a leakage of an internal combustion engine, comprising:
- determining regular mass flows ({dot over (m)}EGR, {dot over (m)}charge, {dot over (m)}ThrVlv) of an air conduit of the internal combustion engine;
- establishing a mass flow balance on the basis of the determined regular mass flows;
- and
- ascertaining a leakage mass flow ({dot over (m)}leak) on the basis of the established mass flow balance.
1 more element
An apparatus, comprising:
- a diagnostic unit for identifying a leakage of an air conduit of an internal combustion engine, wherein the diagnostic unit is operatively configured to:
- determine regular mass flows ({dot over (m)}EGR, {dot over (m)}charge, {dot over (m)}ThrVlv) of an air conduit of the internal combustion engine;
- establish a mass flow balance on the basis of the determined regular mass flows;
- and
- ascertain a leakage mass flow ({dot over (m)}leak) on the basis of the established mass flow balance.
2 more elements
Dependencies are inferred from the claim text.