Method for controlling initial temperature of gas in first firing cycle cylinder of engine

An engine cylinder and engine technology, which is applied in the direction of engine ignition, engine components, engine control, etc., can solve the problems of difficult precise control of cylinder gas temperature, reduced engine test efficiency, and rise in air temperature, so as to shorten the time of backtracking and reduce fuel consumption. Consumption, fast heating effect
CN112377320AActive Publication Date: 2021-02-19TIANJIN UNIV
16 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
TIANJIN UNIV
Publication Date
2021-02-19

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
Patent Text Reader

Abstract

The invention discloses a method for controlling the initial temperature of gas in a first firing cycle air cylinder of an engine. According to the method, a heating process is controlled by using anengine electronic control unit, mixed gas in the air cylinder is ignited by using sparks to heat a combustion chamber by adjusting the mass of gasoline injected into an air inlet pipe and the amount of air on the condition that the opening degree of a throttle valve meets test requirements, the temperature of residual waste gas in the air cylinder and thethermodynamic state in the combustion chamber are calculated according to a temperature sensor installed in an exhaust passage, and after the set temperature of the residual waste gas in the air cylinder and the set thermodynamic state are achieved, the electronic control unit is automatically switched to an engine combustion process test control mode with the set temperature of the gas in the air cylinder.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the technical field of initial gas temperature control and combustion in an engine, in particular to a method for controlling the initial temperature of gas in an engine combustion chamber. Background technique

[0002] The gas temperature in the cylinder before the engine fires for the first time is an important factor affecting the formation and combustion of the combustible mixture. At present, most of the methods for controlling the temperature of the gas in the cylinder are to use the intake heater, such as the disclosed patents CN110296026A and CN209129761U, etc., the implementation of which is to calculate the heating time of the electric heater according to the gas temperature requirements in the engine gas, through Controlling the air temperature in the intake pipe indirectly controls the gas temperature in the cylinder.

[0003] Utilizing this gas heating method of temperature control results in a slower rise in the ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More