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Non-continuous heating system for air inlet of octane value engine, and method

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

Inactive Publication Date: 2014-09-17
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Non-continuous heating system for air inlet of octane value engine, and method
  • Non-continuous heating system for air inlet of octane value engine, and method

Examples

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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 non-continuous heating system for air inlet of an octane value engine, and a method. The system comprises a temperature controller and a heater, wherein a power switch controller is additionally arranged between the temperature controller and the heater, so that heating power output by the temperature controller is input into the heater through the power switch controller. The method comprises the steps that the power switch controller determines an upper dead center position moment and a lower dead center position moment of a suction stroke piston according to a crankshaft phase signal; the power switch controller is opened at an angle in front of an upper dead center, i.e. an opening advance angle, of the suction stroke piston, and is closed at an angle in front of a lower dead center, i.e. a closing advance angle, of the suction stroke piston; the optimum opening advance angle and the optimum closing advance angle are related to 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 Applications(China)
IPC IPC(8): F02M31/13F02M31/135F02D41/00
Inventor 李宝福陈静浩
Owner SHANGHAI UNIV