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US 11,028,742 B2Granted
Crankcase ventilation system for an internal combustion engine
AssigneeVolvo Truck Corporation
InventorsNageswaran Kanniaraj, Kumaravel Manickam, Mahendran Kasinathan
Life of this patent
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Abstract
A crankcase ventilation system is provided for an internal combustion engine that includes a crankcase. An internal combustion engine including such a system is also provided.
Claims23
A crankcase ventilation system for an internal combustion engine comprising a crankcase, the crankcase ventilation system comprising:
- a first filter arrangement arranged for cleaning a crankcase gas generated during operation of the internal combustion engine, the first filter arrangement comprising a filter element of an oleophobic type for cleaning the crankcase gas,
- a temperature altering device for cooling a temperature of the crankcase gas towards a desired temperature, at which the first filter arrangement is adapted for an efficient cleaning,
- wherein:
- the temperature altering device comprises a control unit and a temperature sensor,
- the temperature sensor is electrically connected to the control unit and configured to measure a temperature of the crankcase gas, and
- the control unit is configured for comparing the measured temperature with a predetermined threshold and to generate a control signal if the measured temperature is above the predetermined threshold.
3 more elements
A crankcase ventilation system for an internal combustion engine comprising a crankcase, the crankcase ventilation system comprising:
- a first filter arrangement arranged for cleaning a crankcase gas generated during operation of the internal combustion engine, the first filter arrangement comprising a filter element of an oleophobic type for cleaning the crankcase gas,
- a temperature altering device for cooling a temperature of the crankcase gas towards a desired temperature, at which the first filter arrangement is adapted for an efficient cleaning, wherein the filter element is arranged to have a spherical form.
A crankcase ventilation system for an internal combustion engine comprising a crankcase, the crankcase ventilation system comprising:
- a first filter arrangement arranged for cleaning a crankcase gas generated during operation of the internal combustion engine, the first filter arrangement comprising a filter element of an oleophobic type for cleaning the crankcase gas,
- a temperature altering device for cooling a temperature of the crankcase gas towards a desired temperature, at which the first filter arrangement is adapted for an efficient cleaning, wherein:
- the crankcase ventilation system is configured to recirculate the crankcase gas through the first filter arrangement, and
- the crankcase ventilation system further comprises a controllable valve mechanism configured to adjust a level of crankcase gas recirculation based on a crankcase gas pressure.
1 more element
Dependencies are inferred from the claim text.