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Energy-saving method and electronic control unit for flexibly changing displacement of internal combustion engine

An internal combustion engine, flexible technology, applied in the direction of electrical control, engine control, fuel injection control, etc., can solve the problem of reactive oil supply to deceleration cylinders, reduce the number of working cylinders, etc.

Inactive Publication Date: 2016-08-03
张昌盛
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned technology only solves the problem of reducing the number of working cylinders under light load, and does not solve the problem of closing all cylinders for reactive power supply during deceleration, reverse support, and braking.

Method used

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  • Energy-saving method and electronic control unit for flexibly changing displacement of internal combustion engine

Examples

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no. 1 example

[0015] For ease of description, a six-cylinder diesel engine with a non-electronically controlled ignition sequence of 1-5-3-6-2-4 is taken as an example and further described in conjunction with the accompanying drawings.

[0016] With reference to accompanying drawing, electric control unit of the present invention is by signal acquisition processing circuit 1, single-chip microcomputer 2, power output circuit 3, voltage stabilizing circuit 4, fault diagnosis circuit 6, can be programmed online input circuit 5, throttle position signal sensor 7, engine speed Sensor 8, air intake sensor 9, water temperature sensor 10, and other hardware modules. The electronic control unit is equipped with six output control channels 11-16, one negative power supply output channel 17, and fault detection and display channel 18. 11-16 are controlled by The mechanical overflow valve connected in series with the high-pressure pipeline from the oil pump to the fuel injector, driven by the compress...

no. 2 example

[0024] After all the collected signals are converted and processed, they are sent to the comparison calculation path of the single-chip microcomputer, and two circuit flip switching points are preset, which are one percentage point lower than the corresponding engine speed value of the accelerator position and have a difference of one speed difference between each other. After the point, set the second-level switch points that are equal to half of the cylinders and are several times smaller than the first-level speed difference. Each second-level switch point has an output channel to control the corresponding cylinders.

[0025] When the car is at a constant speed, light load, and no-load state, the engine speed will be higher than a switching point preset at the lower limit of the first layer, and the single-chip microcomputer will turn on one of the second layer switching points brought by the switching point and turn it off. In the state of fuel supply, the other switching p...

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Abstract

The energy-saving method for flexibly changing the displacement of the internal combustion engine and the electronic control unit of the present invention are to send the collected sensor signals into the comparison operation path of the single-chip microcomputer, preset a plurality of circuit flip switching points not less than half of the total number of cylinders plus one, corresponding to All switching points of half of the cylinders control the oil supply or not of each cylinder separately. Another switching point outputs multiple control signals to synchronously control the oil supply of the remaining half of the cylinders, so that the number of working cylinders can be flexibly changed under light loads, and all engine cylinders can be turned off during deceleration, overturning and braking. It can also maintain idle speed with half of the cylinders when the car is hot, so as to reduce fuel consumption and exhaust pollution to the greatest extent.

Description

Technical field: [0001] The invention relates to an energy-saving method for flexibly changing the displacement of an internal combustion engine and an electric control unit. Background technique; [0002] When the car is running, there are often deceleration, overturning, and braking conditions. Under these conditions, the engine does not need to supply oil, but the engine oil supply system is still supplying oil. [0003] The car engine is equipped according to the maximum power required by the car when it starts, accelerates, and is heavy-loaded. However, when the car is running at a constant speed, light load, and no-load most of the time, the required power only accounts for the engine power. 20-40% of the total power, some cylinders can do work to maintain power balance, but in fact the engine is supplying a large amount of fuel with high-speed operation, showing a low power factor state of a large horse-drawn car. [0004] The above two working conditions not only ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02D17/00F02D41/26
Inventor 张昌盛
Owner 张昌盛
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