TSM 2009: Lectures on MW 10-10:50 AM, Room 115 Davidson Hall

Lab Section : M 3:10-6:00 PM, Room 147 Davidson Hall

Tractor Power.

Instructor	Text
Dr. Stuart Birrell, 208 Davidson Hall Phone: 294-2874, sbirrell@iastate.edu Office hours: 11:00-11:30am M,W, F Walk in, except 8-11 M,W,F; 12-6M , 1-3 T,R Other times by appointment	Required Text: Engine and Tractor Power, 4^rd Edition, Goering, C.E., and A.C. Hansen. St. Joseph, Mich.: ASAE. Class Website : http://www.abe.iastate.edu/undergraduate-students/course-web-sites.html
Purpose: To help students understand the principles of internal combustion engines, engine testing and their application in agricultural tractors. To provide students with a fundamental understanding of the concepts of traction and chassis mechanics. Improve student's communication/teamwork skills. Provide exposure to problems that require judgment decisions and justification of those decisions, even in the case of incomplete information.

2009-20011 Catalog Description

Expected Student Learning Outcomes

TSM 335. Tractor Power. (3-3) Cr. 4. F. Prereq: 210, Math 142. Theory and construction of tractor engines, mechanical power trains and hydraulic systems. Introduction to traction, chassis mechanics, and hydraulic power.

Upon successfully completing this course, you should: · Understand the terminology and basic design principles governing the performance of an engine · Exhibit a fundamental understanding of the concepts of traction and chassis mechanics including the interaction between weight transfer, slip and traction, based on the Zoz Charts, Wismer-Luth and Brixius equations. · Understand planar chassis mechanics and limitations of tractor performance based on traction, stability and/or engine torque. · Understand the power flows through a tractor from the engine, through the power train and development of drawbar power.

Course Outline (tentative)

Date		Topic	Reading	Problems	Laboratory Exercise
Aug	24	Introduction			No, Lab
	26	Internal Combustion Engines
	28	Work / Energy / Power	Chap 5
Aug	31	Work / Energy / Power			No, Lab
	2	Engine Principles
	4	Engine Principles	Chap 2
Sept	7	Labor Day			No Lab, Labor Day
	11	Engine Principles
	13	Engine Components & Characteristics	Chap 3
Sept	14	Engine Components & Characteristics			Lab 1. Governed Engine Lab1_Data_2009.xls
	16	Engine Components & Characteristics	Chap 4
	18	Fuels and Combustion
Sept	21	Fuels and Combustion		Hwk1	Lab 2. Mechanical Efficiency Lab2 Data 2009.xls
	23	Carburetors and Spark ignition		Solutions
	25	Diesel Systems
Sept	28	Diesel Systems	Chap 6		Section 1. Engine Construction
	30	Exam 1 (Titlepage)
	2	Review	Chaps 8,9
Oct	5	Air Cleaners / Turbocharging			Section 1. Engine Construction Section 2. Engine Construction
	7	Air Cleaners / Turbocharging	Chap 10
	9	Lubricants
Oct	12	Lubricants & Lubrication Systems	Chap 11		Section 2. Engine Construction
	14	Exam 2
	16	Review	Chap 13		Lab 5. Mechanical Power Trains
Oct	19	Mechanical Power Trains
	21	Mechanical Power Trains
	23	Mechanical Power Trains
Oct	26	Hydraulic Power Trains	Chap 15		Lab 6.Hydromechanical Transmission
	28	Hydraulic Power Trains
	30	Traction & Weight Transfer
Nov	2	Traction & Weight Transfer			Lab 8. Traction, Weight Transfer Lab8_Data
	4	Traction & Weight Transfer	Chap 16
	6	Tractor Stability
Nov	9	Hydraulic Fundamentals		HWK2	Lab 9. Center Gravity, Stability
	11	Exam 2 (TitlePage)		solutions
	13	Hydraulic Pumps/Motors
Nov	16	Hydraulic Motors/Cylinders	Chap 14		Lab 10. John Deere Visit
	18	Basic Hydraulic Circuits
	20	Basic Hydraulic Circuits
Nov	23-27	THANKSGIVING
Nov	30	Basic Hydraulic Circuits			Lab 11. Hydraulic Control
	2	Electronics / Additional Topics
	4	Exam 3
Dec	7	Review			No Lab
	9	Additional Topics/Review
	11	Additional Topics/Review
Dec	14-18	Finals

Course Grading:

Course Component	Percent of Final Grade
Problem Sets/Lab Reports	20%
Exam1, Exam 2, Exam 3	60% (each worth 20%)
Final	20%

Grading System:

Course Policies:

Score Min. grade of: ≥ 90 A- ≥ 80 B- ≥ 70 C- ≥ 60 D- I may shift these scores downward depending on the distribution of the scores.

Homework and Lab Assignments: You will be required to turn in a lab report, or engineering letter for each set of labs as instructed. Most reports will be due the week following the actual lab. The reports will be formal reports (unless otherwise instructed). The reports must be well organized, neat and orderly. The reports, tables and figures (possible exception of sample calculations and equations) should be computer generated. The original data sheets may be included in appendices without change. Tabulated data: Record both observed and calculated results along with associated units. Manipulate the columns, spacing, etc. so it is easy to read and in an organized format. Sample Calculations: Show one sample of each different calculation and or equation development. Exams: You are expected to take exams with the class. Any exceptions need to be cleared with me before the scheduled time that the exam is given.

Attendance:

Attendance to all labs are mandatory for the duration of the lab. Excused absences must be cleared with instructor in advance, except in the case of critical family/health emergencies. If you are not there, you will receive a zero unless you have an excused absence.

Disability Accommodation Statement:

If you have a documented disability and anticipate needing accommodations in this course, please make arrangements to meet with us soon. Please request that a Disability Resources staff send a SAAR form verifying your disability and specifying the accommodation you will need.