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US 6,314,737 B1Granted
Internal combustion engine having an activatable boost air delivery capacity adjusting
AssigneeDaimler Chrysler AG
InventorsUlrich Springer, Joachim Wiltschka
Life of this patent
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Abstract
An internal combustion engine having one or more parallel exhaust-driven turbochargers that each comprise an activatable delivery capacity adjusting unit for variable adjustment of the boost air delivery capacity with malfunction monitoring of each individual delivery capacity adjusting unit wherein, upon detection of a malfunction of a respective delivery capacity adjusting unit, a corresponding malfunction datum is emitted.
Claims16
An internal combustion engine comprising:
- at least one turbocharger driven by an exhaust gas flow of the engine, the at least one turbocharger including:
- a plurality of turbine blades;
- an activatable delivery capacity adjusting unit for variable adjustment of a boost air delivery capacity, the adjusting unit including a shifting apparatus for shifting an incident flow angle of the exhaust gas flow into the plurality of turbine blades and an incident flow angle control unit for controlling the shifting apparatus;
- a monitoring device for monitoring the adjusting unit for a malfunction, the device ascertaining whether the incident flow angle deviates from a predefined set flow angle within a predefined time period, and if so, emits a malfunction datum.
1 more element
An internal combustion engine comprising:
- a plurality of parallel turbochargers, each turbocharger driven by an exhaust gas flow of the engine and including:
- a plurality of turbine blades;
- an activatable delivery capacity adjusting unit for variable adjustment of a boost air delivery capacity;
- a monitoring device for monitoring the adjusting unit for a malfunction, the monitoring device including a differential pressure sensor for sensing a pressure difference between a first boost pressure of a first of the plurality of turbochargers and a second boost pressure of a second of the plurality of turbochargers, and wherein the malfunction datum is emitted if the pressure difference exceeds a predetermined pressure difference value.
1 more element
Dependencies are inferred from the claim text.