Patent application number | Description | Published |
20120296556 | SYSTEM AND METHOD FOR CONTROLLING INTAKE VALVE TIMING IN HOMOGENEOUS CHARGE COMPRESSION IGNITION ENGINES - A control system for a homogeneous charge compression ignition (HCCI) engine includes first and second modules. The first module determines an adjusted intake valve opening (IVO) timing based on a base IVO timing and an IVO timing adjustment, wherein the IVO timing adjustment is based on one or more of a plurality of operating parameters. The second module controls intake valves of the HCCI engine based on the adjusted IVO timing. | 11-22-2012 |
20120296557 | SYSTEM AND METHOD FOR TORQUE CONTROL IN A HOMOGENEOUS CHARGE COMPRESSION IGNITION ENGINE - A control system for a homogeneous charge compression ignition (HCCI) engine includes first and second modules. The first module determines a load on the HCCI engine when the HCCI engine is operating in an HCCI combustion mode. The second module controls torque generated by the HCCI engine based on the determined load and a predetermined threshold, wherein the second module controls the torque generated by the HCCI engine by controlling fueling of the HCCI engine. | 11-22-2012 |
20130013136 | SYSTEM AND METHOD FOR INCREASING OPERATING EFFICIENCY OF A HYBRID VEHICLE - A method is provided for controlling a hybrid electric vehicle that includes an internal combustion engine having a cylinder provided with an intake valve, an exhaust valve, and a piston configured to rotate the engine's crankshaft. The method includes determining whether deceleration of the vehicle is desired and also includes ceasing supply of fuel to the cylinder when such condition is satisfied. The method additionally includes selecting a fuel-off actuation arrangement for the intake valve via a mechanism configured to provide variable valve timing and lift, such that a magnitude of compression pulses in the cylinder during deceleration is limited. A system for controlling the hybrid vehicle and a vehicle employing such a system are also provided. | 01-10-2013 |
20130046452 | MULTI-FUEL VEHICLE FUEL CONTROL SYSTEMS AND METHODS - A method for a multi-fuel vehicle includes: determining a first target amount of fuel to be injected for a combustion event of a combustion chamber of an engine; determining first and second fractions for the combustion event based on at least one of engine speed, engine load, and engine temperature; determining a second target amount of liquid fuel for the combustion event based on the first target amount and the first fraction; determining a third target amount of gaseous fuel for the combustion event based on the first target amount and the second fraction; selectively injecting a liquid fuel directly into the combustion chamber for the combustion event based on the second target amount and using a first fuel injector; and selectively injecting a gaseous fuel into a port of the combustion chamber for the combustion event based on the third target amount and using a second fuel injector. | 02-21-2013 |
20130046454 | SYSTEM AND METHOD FOR ADJUSTING FUEL MASS FOR MINIMUM FUEL INJECTOR PULSE WIDTHS IN MULTIPLE FUEL SYSTEM ENGINES - A control system for an engine includes a fuel mass determination module, a mass fraction determination module, and a fuel injector control module. The fuel mass determination module determines a first minimum fuel mass corresponding to a first fuel system of the engine. The mass fraction determination module determines first minimum and maximum mass fractions based on the first minimum fuel mass and a total fuel mass. The fuel injector control module limits a first desired mass fraction based on the first minimum and maximum mass fractions, and controls a first fuel injector of the engine based on the limited first desired mass fraction. | 02-21-2013 |
20130118449 | SYSTEM AND METHOD FOR CIRCULATING FUEL THROUGH A DIRECT INJECTION PUMP OF A BI-FUEL ENGINE - A fuel supply system for supplying a bi-fuel engine with a first fuel type, e.g., gasoline, includes a cooling circuit. The cooling circuit circulates the first fuel type through a direct injection pump assembly to prevent the first fuel type from overheating within the direct injection pump assembly. | 05-16-2013 |
20130332050 | HUMIDITY DETERMINATION AND COMPENSATION SYSTEMS AND METHODS USING AN INTAKE OXYGEN SENSOR - An engine control system for a vehicle includes an oxygen mass flow rate module, an oxygen per cylinder module, and a fuel control module. The oxygen mass flow rate module generates a mass flow rate of oxygen flowing into an engine based on a mass air flow rate (MAF) into the engine and a percentage of oxygen by volume measured using an intake oxygen (IO) sensor in an intake system. The oxygen per cylinder module generates a mass of oxygen for a combustion event of a cylinder of the engine based on the mass flow rate of oxygen flowing into the engine. The fuel control module controls fueling to the cylinder for the combustion event based on the mass of oxygen. | 12-12-2013 |
20140046571 | CYLINDER TO CYLINDER BALANCING USING FULLY FLEXIBLE VALVE ACTUATION AND CYLINDER PRESSURE FEEDBACK - A control system for an engine includes an valve actuator, a cylinder pressure module, and a valve control module. The valve actuator opens a valve of a cylinder at a first target opening timing during a first combustion cycle of the cylinder. The cylinder pressure module receives a cylinder pressure measured by a cylinder pressure sensor of the cylinder and, at a predetermined crankshaft angle after the valve opens during the first combustion cycle, sets a valve opening pressure equal to the cylinder pressure. The valve control module receives a reference cylinder pressure and generates a second target opening timing for a second combustion cycle of the cylinder based on the valve opening pressure and the reference cylinder pressure. The second combustion cycle is after the first combustion cycle. During the second combustion cycle, the valve actuator opens the valve at the second target opening timing. | 02-13-2014 |