Ignition/compression ignition control device and method for a dimethyl ether-doped internal combustion engine based on cylinder pressure
An internal combustion engine and dimethyl ether technology, which is applied in engine control, machine/engine, mechanical equipment, etc., can solve the problems of difficult dynamic adjustment of the ignition/compression ignition switching boundary of dimethyl ether-doped internal combustion engines, and achieve stable and flexible conversion. , the effect of clean burning
Active Publication Date: 2018-01-19
BEIJING UNIV OF TECH
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Problems solved by technology
[0006] Aiming at the problem that it is difficult to carry out stability control based on combustion feedback information in the ignition and compression-ignition transition process of the current dimethyl ether-doped internal combustion engine, and it is difficult to dynamically adjust the ignition / compression-ignition switching boundary of the dimethyl ether-doped internal combustion engine, the present invention provides a cylinder-based Ignition / compression ignition control device and method for pressure-doped dimethyl ether internal combustion engine
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[0023] The present invention will be further described below in conjunction with accompanying drawing:
[0024] Such as figure 1 As shown, the device includes an internal combustion engine 1, an original fuel injector 2 on the internal combustion engine, a spark plug 4 and an electric control unit 6 of the original engine.
[0025] The dimethyl ether nozzle 3 is installed on the intake manifold of each cylinder or the intake manifold of the internal combustion engine, and the cylinder pressure sensor 5 is installed on the cylinder head.
[0026] The combustion process electronic control unit 7 is connected with the original machine electronic control unit 6 to obtain the target torque signal a of the internal combustion engine, the actual torque signal b, the camshaft signal j, the crankshaft angle signal k and the original engine ignition signal n;
[0027] Combustion process electronic control unit 7 is connected with cylinder pressure sensor 5 to obtain cylinder pressure s...
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The invention provides an ignition / compression ignition control device and method based on cylinder pressure for a dimethyl ether-doped internal combustion engine, and the specific content relates to the control of the ignition and compression ignition composite combustion process of the internal combustion engine. The system adds a set of DME injection system, a set of cylinder pressure detection system and a combustion process electronic control unit on the basis of retaining all the parts of the internal combustion engine body. The electronic control unit of the combustion process can calculate the maximum pressure rise rate according to the cylinder pressure signal, and control the DME and ignition angle according to the value, so as to realize the flexible control and conversion of the ignition and compression ignition process of the DME-doped internal combustion engine, so as to maximize the The compression ignition method is used to improve the thermal efficiency of the internal combustion engine, and the ignition method is used to ensure the operation stability of the internal combustion engine.
Description
technical field [0001] The invention provides an ignition / compression ignition control device and method based on cylinder pressure for a dimethyl ether-doped internal combustion engine, and the specific content relates to the control of the ignition and compression ignition composite combustion process of the internal combustion engine. Background technique [0002] The homogeneous premixed compression ignition combustion method can obtain higher thermal efficiency than the ignition combustion method, and the ignition combustion method can control the combustion stability compared with the homogeneous premixed compression ignition combustion method, especially in cold start, load combustion and It has greater advantages in high-load detonation and rough combustion control. [0003] Most of the current internal combustion engines are difficult to achieve flexible conversion between ignition and compression ignition combustion modes during the working process, which makes ign...
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IPC IPC(8): F02D19/08F02B77/08
Inventor 汪硕峰石磊纪常伟
Owner BEIJING UNIV OF TECH