摘要:
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.
摘要:
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.
摘要:
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.
摘要:
A system for a vehicle includes a cylinder pressure sensor and a control module. The cylinder pressure sensor measures pressure within a cylinder of an engine, generates increases in a cylinder pressure signal based on the pressure, selectively generates a predetermined profile in the cylinder pressure signal, and selectively resets the cylinder pressure signal to a predetermined reset level after generating the predetermined profile in the cylinder pressure signal. The control module receives the cylinder pressure signal, detects the predetermined profile of the cylinder pressure signal, and detects the resetting of the cylinder pressure signal to the predetermined reset level when the predetermined profile is detected.
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
A system for a vehicle includes a cylinder pressure sensor and a control module. The cylinder pressure sensor measures pressure within a cylinder of an engine, generates increases in a cylinder pressure signal based on the pressure, selectively generates a predetermined profile in the cylinder pressure signal, and selectively resets the cylinder pressure signal to a predetermined reset level after generating the predetermined profile in the cylinder pressure signal. The control module receives the cylinder pressure signal, detects the predetermined profile of the cylinder pressure signal, and detects the resetting of the cylinder pressure signal to the predetermined reset level when the predetermined profile is detected.
摘要:
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.
摘要:
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.