35 results about "Brake specific fuel consumption" patented technology

This disclosure teaches a method of controlling a direct injection internal combustion engine and predicting the behaviour of a direct injection internal combustion engine. An estimation of initial cylinder pressure, air flow and EGR flow (if applicable) is used to establish a system that provides engine behaviour by integrating an injection module, combustion module and engine control module to provide data indicative of engine behaviour such as brake torque and power, air flow, EGR flow, cylinder pressure, brake specific fuel consumption, start of combustion, heat release rate, turbo-charger speed and other variables. These values can then be used to adjust commanded variables such as start of injection, commanded pulse width, rail pressure to meet operator demand. Also the output data can be used as a tool to determine how a conceptualised engine design will behave. This is particularly useful for gaseous-fueled internal combustion engines where cylinder pressure influences behaviour of injected gases in light of the fact that rail pressure and cylinder pressure are, generally, of a similar magnitude.

A method and a system of managing load sharing among a plurality of power sources are disclosed. According to certain embodiments, the method includes determining a total power output to be directed from the plurality of power sources to at least one power consumer. The method also includes retrieving a Brake Specific Fuel Consumption (BSFC) curve associated with each of the plurality of power sources. The method further includes determining an operating priority for each of the plurality of power sources based on operating constraints associated with the respective power source. The method further includes determining a load share for each of the plurality of power sources based on at least the total power output, the BSFC curves, and the operating priorities.

The invention relates to the field of the design of aircrafts, in particular to a flight control method. According to the flight control method, through designing special fuel loops in an aircraft body structure, fuel can flow in the loops according to specified direction and speed, and thus, the aim of controlling the motion of an aircraft is reached. The method can be independently applied to an aircraft and can also be used through being combined with other flight control methods. With the adoption of the method, the defects that the control redundancy is insufficient, the aircraft is out of control in case of battle damage and failure, the specific fuel consumption is large, and the like, of the traditional control method are overcome.

A method includes combusting air within a plurality of cylinders of an internal combustion engine by injecting a fuel into the plurality of cylinders. The method further includes expanding a first portion of an exhaust gas generated from the plurality of combustion cylinders via a turbine. The method further includes controlling at least one of feeding a second portion of the exhaust gas via an exhaust channel bypassing the turbine; and recirculating a third portion of the exhaust gas to the plurality of combustion cylinders via a recirculation channel, as a function of an intake manifold air temperature and pressure at which the engine is operated.

The invention discloses a calibration method and calibration device for a gasoline-hydrogen fueled engine. The calibration method comprises the following steps: regulating gas-jetting pulse width of an engine and obtaining multiple corresponding equivalent air-fuel ratios; obtaining minimum-ignition advance angles MBT of maximum torques corresponding to the multiple equivalent air-fuel ratios, and recording multiple specific fuel consumptions of the engines; obtaining optimal specific fuel consumption and recording the gas-jetting pulse width corresponding to the optimal specific fuel consumption as well as equivalent air-fuel ratios and ignition advance angles under the gas-jetting pulse width, and respectively calibrating to-be-calibrated rotation speed and to-be-calibrated gas-jetting pulse width, the equivalent air-fuel ratios and ignition advance angles under the gas inlet pressure of the engine. The calibration method for the gasoline-hydrogen fueled engine of the embodiment of the invention can greatly improve the exhaustion of the gasoline-hydrogen fueled engine relative to the exhaustion of the same-displacement gasoline engine, so that the exhaustion requirements of national locomotive can be satisfied, and the engine reaches the best dynamic property and economical efficiency.

The invention relates to a storage battery charging and jointly outputting system of a current-limiting power supply. In the invention, an engine generator or a mains alternating current power supply is used, and the system specifically has the characteristic of limiting the maximum output current via an electromagnetic effect and / or has the characteristic of setting constant current lower than the maximum output current or setting an output close to the constant current so as to supply power to a load and charge a storage battery or supply power to the load together with the storage battery; and when an engine generator set is used as a power supply, during running, the engine runs with an optimal and / or better energy-saving revolution in an optimal and / or better torque region in the Brake Specific Fuel Consumption.