MEMS BOLOMETER SENSOR FOR MEASURING TEMPERATURE IN AN EXHAUST PIPE OF AN AUTOMOTIVE VEHICLE

摘要

A control system for an internal combustion engine includes a temperature sensor and an engine controller. The sensor measures the temperature of exhaust gas passing through an exhaust manifold of the engine during each cycle. The controller selectively operates the engine in a first state and a second state. In the first, normal state, a quantity of fuel based on an open loop fuel mass command value is injected into the engine each cycle. In the second state, the controller determines a temperature of the exhaust gas during a normal cycle, injects the quantity and additional fuel into the engine during a second cycle, determines the temperature of the exhaust gas during the second cycle, compares the temperatures, and adjusts the command value for fuel to be injected each cycle when operating the engine in the first state.

主权项

1. A control system for an internal combustion engine, comprising:
a temperature sensor configured to generate a signal indicative of a temperature of exhaust gas passing through an exhaust manifold of the engine; and an engine controller configured to selectively operate the engine in:
a first state, whereat the engine controller is configured to operate a fuel injector for the engine to inject a quantity of fuel into the engine corresponding to an open loop fuel mass command value; anda second state, whereat the engine controller is configured to:
determine a first temperature of the exhaust gas based on the signal generated by the temperature sensor during a first engine cycle at which the quantity of fuel is injected into the engine;operate the fuel injector to inject the quantity of fuel along with an additional amount of fuel into the engine during a second engine cycle;determine a second temperature of the exhaust gas based on the signal generated by the temperature sensor during the second engine cycle;compare at least the first temperature and the second temperature; andadjust the open loop fuel mass command value based on the comparison.