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Diesel/alcohol binary fuel engine intake charge heating device and control method

A technology of intake charge and binary fuel, applied in engine control, fuel heat treatment device, machine/engine, etc., can solve the problem of unreasonable control of intake charge temperature of diesel/alcohol binary fuel engine, etc. Achieve the effect of improving effective thermal efficiency, improving combustion efficiency, and improving work reliability

Pending Publication Date: 2020-02-21
JIANGSU UNIV
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0003] In order to overcome the problem that the existing intake charge heating device cannot reasonably control the intake charge temperature of a diesel / alcohol binary fuel engine, the present invention provides a diesel / alcohol binary fuel engine intake charge heating device and its control method

Method used

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  • Diesel/alcohol binary fuel engine intake charge heating device and control method
  • Diesel/alcohol binary fuel engine intake charge heating device and control method
  • Diesel/alcohol binary fuel engine intake charge heating device and control method

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Embodiment Construction

[0020] The technical solution of the present invention will be described in more detail below in conjunction with the accompanying drawings.

[0021] like figure 2 , image 3 and Figure 4 As shown, a diesel / alcohol binary fuel engine intake charge heating device provided in this embodiment includes an intake manifold 10, an intake manifold 1, an upper intake charge heater 2, a lower intake charge heater Heater 3, alcohol rail 4, alcohol fuel nozzle 5, diesel fuel injector 7, intake charge heater downstream temperature sensor 6, intercooler temperature sensor 9, ECU8. The upper intake charge heater 2 and the lower intake charge heater 3 are arranged in the intake manifold 10 and connected to the ECU 8, and the upper intake charge heater 2 and the lower intake charge heater are controlled by the ECU 8 3, the intake charge first passes through the upper intake charge heater 2 and then enters the intake manifold 1 through the lower intake charge heater 3; the inlet end of the...

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Abstract

The invention relates to a diesel / alcohol binary fuel engine intake charge heating device and a control method. The heating device comprises an intake main pipe, an intake manifold, an upper intake charge heater, a lower intake charge heater, an alcohol track, an alcohol fuel nozzle, a diesel injector, an intake charge heater downstream temperature sensor, an inter-cooling rear temperature sensorand an ECU. The number of the started intake heaters is determined according to the working mode of an engine; the heating power control of the intake charge heaters is achieved through regulation ofthe duty ratio of PWM waves by the ECU according to the engine working conditions and the proportion of intake charge heating downstream temperature to alcohol fuel. The problems that the alcohol fuelcan not be completely atomized in an inlet due to too low intake temperature and consequently the distribution of the alcohol fuel in a cylinder is uneven, the combustion progress is slow and the combustion efficiency is low are solved.

Description

technical field [0001] The invention relates to the technical field of dual-fuel engines, in particular to a heating device and control method for an intake air charge of a diesel / alcohol binary fuel engine. Background technique [0002] In response to the policy of energy saving and emission reduction of internal combustion engines, diesel / alcohol binary fuel combustion technology is applied to compression ignition engines. At present, the known charge heaters for compression ignition engines are designed for pure diesel compression ignition engines, but since the latent heat of vaporization of alcohol fuel is usually 3.76-4.32 times that of diesel, the high latent heat of vaporization and lower calorific value lead to further The temperature of the air charge is lowered. Generally, the intake charge heating device of the original machine cannot control the intake charge temperature of the diesel / alcohol binary fuel engine well. When the intake air temperature is too low, ...

Claims

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Application Information

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IPC IPC(8): F02M31/13F02D19/08
CPCF02M31/13F02D19/08
Inventor 赵廉刘军恒杨军孙平王攀
Owner JIANGSU UNIV
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