การทดลองและศึกษาการเผาไหม้ของเครื่องยนต์ที่มีส่วนผสมเป็นเนื้อเดียวกันและจุดระเบิดโดยการอัด

Experiment and Study of Combustion in a Homogeneous Charge Compression Ignition Engine

Name: พีรวัฒน์ สายสิริรัตน์

Name: Peerawat Saisirirat

Organization : มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าธนบุรี

keyword: เครื่องยนต์

; การเผาไหม้

Abstract: The homogeneous charge compression ignition engine (HCCI Engine) is a high thermal efficiency and low emission engine. At present, the disadvantages of this engine are the narrow operation range between low and medium load only and to complex in controlling the operating condition of this engine. From the advantage and disadvantage of HCCI engine is the challenge to study and develop engine in this thesis. The first objective of this thesis is to study the operating range, when the engine is smooth running. The second objective is to study the combustion characteristic of this engine, when liquid petroleum gas is used as a fuel at engine speed between 1200 to 1600 revolution per minute and indicated mean effective pressure between 350 to 600 kilopascal. The interesting variables to study are intake temperature and fuel equivalence ratio. The first of study was modifying direct injection diesel engine, compression ratio 18.4: 1 by installed gas mixer and intake temperature controller. The cause of modification above effect to the engine, that is it can running by dual fuel. To beginning the test, first operated engine in diesel mode. The next control the engine speed converged to studying condition and increased intake temperature to operation range. After that added liquid petroleum gas to engine and decreased diesel fuel together. To observe operating characteristic of engine when it was running by auto ignition, suddenly shut off diesel fuel line. The test shown, the engine can running in HCCI mode completely, when intake temperature between 160 to 180 degree celsius and equivalence ratio between 0.5 to 0.7. The studying of combustion characteristic shown, the start of combustion begins at 6 to 2 degree before TDC, was smooth running. Indicated thermal efficiency were more than 47.5 percent, coefficient of variation of maximum pressure were less than 2.0 percent and coefficient of variation of indicated mean effective pressure were less than 2.5 percent. The starting of combustion were between 7 to 12 crank angle degree and rapid burning period were between 4.5 to 9 crank angle degree. Moreover, when to test at other conditions, such as intake temperature between 60 to 150 degree celsius and equivalence ratio between 1.5 to 0.5, at these conditions shown the engine can not running incomplete HCCI mode. From all study above shown the homogeneous charge compression ignition engine, it was high thermal efficiency, smooth running and very fast combustion process. To control operation condition of homogeneous charge compression engine will done by control intake temperature agree with equivalence ratio.

มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าธนบุรี

Address: กรุงเทพมหานคร

Email: info.lib@mail.kmutt.ac.th

Name: สมชาย จันทร์ชาวนา

Role: อาจารย์ที่ปรึกษา

Created: 2544

Issued: 2007-02-12

Modified: 2557-12-25

วิทยานิพนธ์/Thesis

ISBN: 9746289209

CallNumber: MEE1354

tha

DegreeName: วิศวกรรมศาสตรมหาบัณฑิต

Level: ปริญญาโท

Descipline: วิศวกรรมเครื่องกล

Grantor: มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าธนบุรี

©copyrights มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าธนบุรี

ลำดับที่.	ชื่อแฟ้มข้อมูล	ขนาดแฟ้มข้อมูล	จำนวนเข้าถึง	วัน-เวลาเข้าถึงล่าสุด
1	MEE1354.pdf	2.54 MB	76	2022-11-05 18:09:34
2	MEE1354ab.pdf	32.38 KB	25	2022-11-05 18:21:42
3	MEE1354ab.txt	2.94 KB	21	2022-11-05 18:22:55

ใช้เวลา

0.039406 วินาที