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A fuel supply device for a port injection hydrogen internal combustion engine and a control method thereof

A technology of port injection and fuel supply, which is used in oil supply devices, engine control, internal combustion piston engines, etc.

Inactive Publication Date: 2016-01-06
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The correction method should not only have sufficient precision, but also take into account the limited range of pulse width, and the hardware implementation must be simple, reliable and low-cost

Method used

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  • A fuel supply device for a port injection hydrogen internal combustion engine and a control method thereof
  • A fuel supply device for a port injection hydrogen internal combustion engine and a control method thereof
  • A fuel supply device for a port injection hydrogen internal combustion engine and a control method thereof

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Embodiment Construction

[0018] Such as figure 1 As shown, the system composition of the present invention includes a set of hydrogen first nozzles 1 installed above the intake manifold and a set of hydrogen second nozzles 2 located near the intake duct below the intake manifold. The injection direction of the first nozzle 1 is directly opposite to the valve, and the injection direction of the second nozzle 2 is at an angle of α degrees to the streamline of the intake pipe. Behind the hydrogen nozzle are hydrogen gas rails 3 and 4, which have a certain volume to eliminate fluctuations in air pressure to the greatest extent. A hydrogen pressure sensor 5 is installed upstream of the two gas rails. The sensor converts the hydrogen pressure signal into a voltage signal and sends it to the engine control unit (ECU) 6.

[0019] The specific control process is: through bench tests and numerical calculations, the hydrogen injection range at different speeds and the influence of the pressure at different pulse wi...

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Abstract

The invention relates to a fuel supply device of an internal-combustion engine injecting hydrogen in a gas inlet channel and a control strategy of the fuel supply device. the structure and the working process of the whole system are as follows: an engine control unit 6 (ECU) calculates the needed hydrogen injecting amount according to a formed calibrated by an engine pedestal on the basis of current rotary speed and load requirements; a hydrogen rail pressure sensor 5 is located on upstream pipelines of hydrogen rails 3 and 4 to feed back current pressure numerical values to the ECU; the needed hydrogen injecting pulse width can be decided by the hydrogen injecting amount and the pressure of the hydrogen rails; then permitted range of the hydrogen injecting pulse width can be inquired from the form inside the ECU according to the rotary speed of the engine and the time for injecting hydrogen is decided; at the time, the ECU judges whether the maximum hydrogen injecting pulse width of a single hydrogen injecting valve in the pulse width permitted range meets the requirement of hydrogen injecting amount or not. If so, a first nozzle 1 works; and if not, a second nozzle 2 is opened, and the needed injecting pulse width is calculated.

Description

Technical field [0001] The invention relates to a fuel supply device and a control method for a hydrogen engine. The technical solution is that each cylinder uses two solenoid valve nozzles to provide sufficient hydrogen, and determines the compensation value of the hydrogen injection pulse width according to the fluctuation of the hydrogen pressure. Realize precise control of air-fuel ratio. Background technique [0002] With the increasingly stringent emission regulations and pressure from the reduction of petroleum fuels, internal combustion engine researchers have been looking for clean, recyclable alternative fuels. With hydrogen as fuel, the product of complete combustion is water, without the CO, HC and soot and other pollutants produced by traditional petroleum fuels. Its only emissions are nitrogen oxides produced by burning oxygen and nitrogen at high temperatures. In addition, as global warming has attracted more and more attention, reducing carbon dioxide and other g...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02M21/02F02D19/02
CPCY02T10/30
Inventor 孙柏刚刘福水段松伟张冬生孙大伟
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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