Modular electric-control diesel engine oil quantity calculation and control system and method

Abstract

The invention relates to a modular electric-control diesel engine oil quantity calculation and control system and method. The modular electric-control diesel engine oil quantity calculation and control system comprises an initial external characteristic oil quantity module. The initial external characteristic oil quantity module is connected with an external characteristic oil quantity environment correction module. The output end of the external characteristic oil quantity environment correction module is connected with an oil quantity calculation module. The output end of the oil quantity calculation module is connected with a theoretical oil quantity calculation module. The theoretical oil quantity calculation module is further connected with a system oil quantity limiting module. The output end of the theoretical oil quantity calculation module is connected with a target oil quantity calculation module. The output end of the target oil quantity calculation module is connected with an actual oil spraying quantity calculation module. According to the modular electric-control diesel engine oil quantity calculation and control system and method, accurate control over the oil quantity is achieved, and software resources are effectively saved; and the change of an accelerator pedal is judged, and relevant oil quantity limitation is executed, so that the problems that the actual oil spraying quantity is decreased while the required opening degree of the accelerator pedal is increased, and the actual oil spraying quantity is increased while the required opening degree of the accelerator pedal is decreased are solved, and accordingly the oil quantity calculation and control logic are made more reasonable.

Description

technical field [0001] The invention relates to a control system and method, in particular to a modularized electronically controlled diesel engine fuel volume calculation control system and method, belonging to the technical field of fuel volume control in diesel engine electronic control systems. Background technique [0002] The engine electronic control unit obtains sensor signals such as the crankshaft speed sensor and the accelerator pedal sensor, performs data processing, and drives the oil pump metering valve, electronically controlled fuel injector and other actuators to work, and the calculation and control of the engine oil quantity are all directly looked up in the form of a table. , and does not optimize and control the calculated value of the best fuel quantity in the current working condition according to operating conditions such as steady state and transient state, actual oil addition / reduction demand, etc. At the same time, some existing fuel quantity contr...

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Problems solved by technology

[0002] The engine electronic control unit obtains sensor signals such as the crankshaft speed sensor and the accelerator pedal sensor, performs data processing, and drives the oil pump metering valve, electronically controlled fuel injector and other actuators to work, and the calculation and control of the engine oil quantity are all directly looked up in the form of a table. , and does not optimize and control the calculated value of the best fuel quantity in the current working condition according to operating conditions such as steady state and transient state, actual oil addition / reduction demand, etc.

At the same time, some existing fuel quantity control systems have the problems of occupying a lot of software resources and the workload of the test personnel to calibrate the optimal table look-up map (MAP); there are also some fuel quantity control systems that are too simple and have poor control accuracy The problem

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