System and Method for Crankcase Gas Air to Fuel Ratio Correction
First Claim
Patent Images
1. An engine associated with a motor vehicle, comprising:
- a ventilation line having a first end in fluid communication with an interior of a crankcase and a second end in fluid communication with an intake manifold and wherein the ventilation line conveys crankcase gases from the interior of the crankcase to the interior of the intake manifold;
a sensor configured to gather information related to crankcase gases;
an electronic control unit in communication with the sensor and a fuel injector;
the electronic control unit configured to calculate a fuel injection duration according to information related to the crankcase gases received from the sensor; and
wherein the electronic control unit is configured to control the fuel injector according to the fuel injection duration.
1 Assignment
0 Petitions
Accused Products
Abstract
A method and a system for correcting combustion in an engine to control for the effect of crankcase gases in the intake system are disclosed. The system includes one or more sensors in the crankcase ventilation system. An air to fuel ratio sensor may be disposed within a breather line and/or a PCV line of the crankcase ventilation system to monitor crankcase gases.
-
Citations
20 Claims
-
1. An engine associated with a motor vehicle, comprising:
-
a ventilation line having a first end in fluid communication with an interior of a crankcase and a second end in fluid communication with an intake manifold and wherein the ventilation line conveys crankcase gases from the interior of the crankcase to the interior of the intake manifold; a sensor configured to gather information related to crankcase gases; an electronic control unit in communication with the sensor and a fuel injector; the electronic control unit configured to calculate a fuel injection duration according to information related to the crankcase gases received from the sensor; and wherein the electronic control unit is configured to control the fuel injector according to the fuel injection duration. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. A method for controlling combustion in an engine, comprising the steps of:
-
receiving information from a plurality of sensors, including a sensor disposed within a ventilation line that is configured to connect a crankcase with an intake manifold; measuring properties of crankcase gases using the sensor; determining a crankcase gas correction parameter according to information received from the sensor; and controlling a fuel injector according to a set of parameters, the set of parameters including the crankcase gas correction parameter. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15)
-
-
16. A method of controlling a fuel injector associated with an engine, comprising the steps of:
-
sensing information related to an air to fuel ratio of crankcase gases from a crankcase interior that are re-circulated into an intake manifold; and controlling the fuel injector according to the information related to the air to fuel ratio of the crankcase gases. - View Dependent Claims (17, 18, 19, 20)
-
Specification