| Patent application number | Description | Published |
|---|
| 20080229814 | CRANK POSITION CORRECTION USING CYLINDER PRESSURE - A method of correcting a crankshaft position may include determining first, second, and third crankshaft positions, determining first, second, and third cylinder pressures, determining first, second, and third cylinder volumes, determining the logarithm of the first, second, and third cylinder pressures and cylinder volumes, and determining a relationship between the third cylinder volume and the first and second cylinder volumes. The first, second, and third crankshaft positions may be provided during one of a piston expansion stroke and a piston compression stroke within a cylinder. The logarithm of the third cylinder pressure and cylinder volume may be evaluated with respect to a predetermined limit of a line defined by the logarithm of the first and second cylinder pressures and first and second cylinder volumes. | 09-25-2008 |
| 20090043475 | CYLINDER PRESSURE SENSOR DIAGNOSTIC SYSTEM AND METHOD - A control module comprising a cylinder torque determination module that determines an indicated torque for a cylinder in an engine based on a pressure in the cylinder, a cylinder torque balancing module that determines a derivative term for the cylinder based on rotation of a crankshaft, and a cylinder pressure error detection module that detects a pressure error for the cylinder based on the indicated torque and the derivative term. A method comprising determining an indicated torque for a cylinder in an engine based on a pressure in the cylinder, determining a derivative term for the cylinder based on rotation of a crankshaft, and detecting a pressure error for the cylinder based on the indicated torque and the derivative term. | 02-12-2009 |
| 20090276138 | TIME AND ANGLE BASED CYLINDER PRESSURE DATA COLLECTION - A control module for determining a time and angle based cylinder pressure includes a crankshaft position determination module that determines a first crankshaft position in an engine at a first time, a time-based cylinder pressure determination module that determines N time-based cylinder pressures in the engine at N times, wherein N is an integer greater than one, and an angle-based cylinder pressure determination module that determines an angle-based cylinder pressure at the first crankshaft position based on the first time, the N cylinder pressures, and the N times. | 11-05-2009 |
| 20100095935 | FUEL PRESSURE AMPLIFIER - The present invention relates to systems and methods for pressurization of a fuel line of an engine. In one embodiment, a fuel charging system for an engine is provided. The fuel charging system includes a first fuel pump in fluid communication with a fuel tank to generate a first fluid pressure within a first fuel line. The fuel charging system also includes a second fluid pump having a reciprocating piston including a low pressure end and a high pressure end. The low pressure end is in fluid communication with the first fuel pump through the first fuel line and the high pressure end is in fluid communication with an engine fuel rail through a second fuel line. The reciprocating piston is driven by the first fluid pressure to generate a second fluid pressure within the second fuel line, wherein the second fluid pressure is greater than the first fluid pressure. | 04-22-2010 |
| 20100250089 | METHOD AND SYSTEM FOR GENERATING A DIAGNOSTIC SIGNAL OF AN ENGINE COMPONENT USING AN IN-CYLINDER PRESSURE SENSOR - A method and a control module for diagnosing an engine component function includes a comparison module comparing an in-cylinder pressure signal to a threshold and a fault indication module generating a diagnostic signal for an engine component in response to comparing. | 09-30-2010 |
| 20110023836 | SYSTEMS AND METHODS FOR DETECTING FAILED INJECTION EVENTS - A fuel injection system includes an injector control module, a current detection module, and a position determination module. The injector control module controls current through a solenoid of a fuel injector for a predetermined period. The current detection module measures an amount of current through the solenoid after the predetermined period. The position determination module determines whether the fuel injector injected fuel during the predetermined period based on when the amount of current through the solenoid is less than or equal to a predetermined current. | 02-03-2011 |
| 20110083498 | IN-CYLINDER PRESSURE SENSOR DIAGNOSTIC SYSTEMS AND METHODS - A pressure sensor diagnostic system of the present disclosure includes an excitation module, a frequency determination module, and a fault determination module. The excitation module excites an in-cylinder pressure sensor and causes the in-cylinder pressure sensor to oscillate. The frequency determination module determines an oscillation frequency of the in-cylinder pressure sensor. The fault determination module diagnoses the in-cylinder pressure sensor based on the oscillation frequency. | 04-14-2011 |
| 20110106392 | METHOD AND SYSTEM FOR DETECTING A FAULT DURING CATALYST LIGHT-OFF - A system and method for controlling engine operation includes a timer module that determines a time period from when a catalyst light-off mode is entered to when an oxygen sensor signal reaches an oxygen sensor threshold and a comparison module that generates an error signal and determines when the time period is above a time threshold. | 05-05-2011 |
| 20110106394 | METHOD AND SYSTEM FOR CONTROLLING AN ENGINE USING IN-CYLINDER PRESSURE SENSOR SIGNALS - A method and a control system that includes a window module that determines a piston position window, a mean effective pressure determination module that generates a mean effective pressure with in-cylinder pressure signals within the piston position window and an engine control module that controls the engine using the mean effective pressure. | 05-05-2011 |
