# US 2014/0207360 A1 · Microcontroller for pollution control system for an internal combustion engine > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0207360 A1 - Document ID: US20140207360A1 - Status: Published application - Kind: A1 - Application number: 14/156,189 - Filed: 2014-01-15 - Published: 2014-07-24 - Earliest claimed: 2013-01-18 - Inventors: Serge V. Monros - Web page: https://patentgrep.com/patent/US20140207360A1 ## CPC - F02D 41/0025: {Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures} - F01M 13/023: {Control valves in suction conduit} - G06F 16/9535: Search customisation based on user profiles and personalisation - F01M 2013/0022: {electromagnetic} - F02D 2250/08: Engine blow-by from crankcase chamber - F02D: CONTROLLING COMBUSTION ENGINES (vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed B60K31/00; conjoint control of vehicle sub-units of different type or different function, road vehicle drive control systems for purposes other than the control of a single sub-unit B60W) - F01M: LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) ## Abstract A pollution control system for an internal combustion engine includes a microcontroller and a power supply, a plurality of sensors configured to measure operating parameters of the engine, and a PCV valve responsive to a control signal from the microcontroller and configured to regulate a flow rate of blow-by gasses in the engine. The microcontroller includes programmable flash memory connected to a control processor, a power supply input, a sensor input configured to receive data from an engine sensor, and a signal output configured to transmit a signal from the control processor so as to control operation of a PCV valve regulating a flow rate of blow-by gasses in the engine. ## Claims ### Claim 1 A pollution control system for an internal combustion engine, comprising: a microcontroller electrically connected to a power supply; a plurality of sensors connected to the microcontroller, each of the plurality of sensors configured to measure operating parameters of the engine; and a PCV valve electrically connected to the microcontroller and responsive to a control signal therefrom, for regulating a flow rate of blow-by gases in the engine. ### Claim 2 (depends on 1) The system of claim 1, wherein the PCV valve is moveable between opened and closed positions so as to regulate vacuum pressure in the engine. ### Claim 3 (depends on 1) The system of claim 1, wherein the plurality of sensors include an engine temperature sensor, a spark plug sensor, a battery sensor, a PCV valve sensor, an engine RPM sensor, an accelerometer sensor, or an exhaust gas sensor. ### Claim 4 (depends on 1) The system of claim 1, wherein the microcontroller includes a signal wire, a PCV control wire, and power supply wires. ### Claim 5 (depends on 1) The system of claim 1, wherein the microcontroller is powered only when an ignition for the engine is on. ### Claim 6 (depends on 1) The system of claim 1, wherein the microcontroller comprises solid state memory that is programmable and reprogrammable. ### Claim 7 (depends on 1, 2, 3, 4, 5, 6) The system of any of claims 1-6, wherein the PCV valve is in fluid communication with a crankcase and an intake manifold on the engine. ### Claim 8 (depends on 7) The system of claim 7, wherein the microcontroller operates a restrictor within the PCV valve, for regulating the flow rate of blow-by gases through the PCV valve. ### Claim 9 (depends on 7) The system of claim 7, wherein the microcontroller regulates the flow rate of blow-by gases from the crankcase to the intake manifold based on the quantity of blow-by gases being produced. ### Claim 10 (depends on 9) The system of claim 9, wherein the microcontroller determines the quantity of blow-by gases being produced based upon the operating parameters of the engine measured by the sensors. ### Claim 11 (depends on 1) The system of claim 1, wherein the microcontroller comprises: programmable flash memory connected to a control processor; a power supply input connected to the memory and the control processor; a sensor input connected to the control processor, wherein the sensor input is configured to receive data from an engine sensor; and a signal output connected to the control processor, wherein the signal output transmits a signal from the control processor so as to control operation of a PCV valve that regulates a flow rate of blow-by gases in the engine. ### Claim 12 (depends on 11) The system of claim 11, wherein the control processor is configured to send multiple operating signals through the signal output. ### Claim 13 (depends on 12) The system of claim 12, wherein a first operating signal is configured to close the PCV valve while the engine is in a cold start state. ### Claim 14 (depends on 13) The system of claim 13, wherein a second operating signal is configured to open the PCV valve within a window of engine RPMs while the engine is in a warm running state. ### Claim 15 (depends on 14) The system of claim 14, wherein a third operating signal is configured to periodically open the PCV valve for a predetermined time interval within a window of engine RPMs when the engine RPMs are within the window for longer than a predetermined duration. ### Claim 16 (depends on 11, 12, 13, 14, 15) The system of any of claims 11-15, wherein the engine sensor is configured to transmit data on engine RPMs, engine temperature, engine torque, or crankcase pressure.