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Discontinuous heating system and method for octane engine intake air

A heating method and engine technology, applied in the directions of engine components, engine control, machine/engine, etc., can solve problems such as difficult heating methods, and achieve the effect of increasing the temperature range of the intake air of the mixture and suppressing the deflagration phenomenon.

Inactive Publication Date: 2016-11-09
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the heater itself has a certain thermal inertia, it is difficult to fully implement the above ideal heating method.

Method used

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  • Discontinuous heating system and method for octane engine intake air
  • Discontinuous heating system and method for octane engine intake air

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Embodiment Construction

[0020] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0021] Such as figure 1 As shown, a discontinuous heating system for octane engine air intake, including a thermostat and a heater, a power switch controller is added between the thermostat and the heater, so that the heating power output by the thermostat Input to heater through power switch controller.

[0022] A discontinuous heating method for octane engine intake air, the power switch controller determines the time of the top dead center position and the bottom dead center position of the suction stroke piston according to the crankshaft phase signal, and the power switch controller The angle before the top dead center, that is, the opening advance angle is open, and the angle before the bottom dead center of the suction stroke piston, that is, the closing advance angle is closed; the optimal opening advance angle and closing advance a...

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Abstract

The invention relates to a discontinuous heating system and method for octane engine intake air. The system includes a thermostat and a heater, and a power switch controller is added between the thermostat and the heater, so that the heating power output by the thermostat is input to the heater through the power switch controller. In this method, the power switch controller determines the timing of the top dead center position and the bottom dead center position of the suction stroke piston from the crankshaft phase signal, and the power switch controller determines the opening advance angle at an angle before the top dead center of the suction stroke piston. It is open, and it is closed at an angle before the bottom dead center of the piston on the suction stroke, that is, the closing advance angle; the optimal opening advance angle and closing advance angle are related to the physical parameters of the heating system.

Description

technical field [0001] The invention relates to a discontinuous heating system and method for octane engine intake air. Background technique [0002] The flow of air or mixture in the engine intake system is not constant. There is intake flow only in the intake stroke, and the intake flow changes with the change of crankshaft phase. In order to reduce the amount of intake air temperature fluctuation, the ideal heating method is: the heater only heats the flowing air or mixed gas during the intake stroke, and does not heat the gas retained in the heater at other times. This requires intermittent heating corresponding to the intake air flow. However, since the heater itself has a certain thermal inertia, it is difficult to fully implement the above-mentioned ideal heating method. [0003] The octane number of gasoline is an important technical index indicating the ability of gasoline to resist knocking. The currently internationally recognized standard testing instrument i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02M31/13F02M31/135F02D41/00
Inventor 李宝福陈静浩
Owner SHANGHAI UNIV