Fall 2006
Agricultural and Biosystems Engineering
Iowa State University

TSM 335
Tractor Power Topics

Required Text: Engine and Tractor Power, 3rd Edition, Carroll E. Goering

Supplemental References: Farm Power and Tractors, 5th Ed., Jones and Aldred
                                              Tractors and their Power Units, 4th Ed., Liljedahl, et al.


Date   Topic Reading Laboratory Exercise (Homework)
Aug 21 Introduction     No, Lab
23 Internal Combustion Engines (See Notes)  
25 Work / Energy / Power Chap 5  
Aug 28 Work / Energy / Power   Lab 1. Governed Engine Tests    Lab1_TestData.xls
30 Work / Energy / Power    
1 Work / Energy / Power Chap 2  
Sept 4 Labor Day   No Lab, Labor Day
6 Engine Principles  
8 Engine Principles Chap 3  
Sept 11 Engine Components & Characteristics   Lab 2. Mechanical Efficiency   Lab2_TestData.xls
13 Engine Components & Characteristics Chap 4  (Homework 1, Power & Efficiency)  Solutions
15 Cooling Systems  Chap 11  
Sept 18 Air Cleaners / Turbocharging   Section 1. Engine Construction
20 Exam 1 (Titlepage)   (Homework 2, Engines & Fuels)
22 Air Cleaners / Turbocharging    
Sept 25 Fuels and Combustion Chap 6 Section 1. Engine Construction
27 Fuels and Combustion    
29 Carburetors and Spark ignition Chaps 8,9  
Oct 2 Carburetors and Spark ignition   No Lab
4 Diesel Systems Chap 10  
6 Diesel Systems    
Oct 9 Diesel Systems   Lab 4.Injection Systems, Carburetor, Spark Ignition
11 Diesel Systems    
13 Lubricants Chap 13  
Oct 16 Lubricants & Lubrication Systems   Lab 5. Mechanical Power Trains
18 Exam 2 (Titlepage)   Homework 2, Engines & Fuels        Solutions
20 Review    
Oct 23 Mechanical Power Trains Chap 15 Lab 6.Hydromechanical Transmission  Data.xls
25 Mechanical Power Trains (IVT/CVT)    
27 Clutches/Differentials/Final Drives    
Oct 30 Hydraulic Power Trains   Lab 8. Traction, Weight Transfer  Lab8_Data.xls
1 Hydraulic Power Trains Chap 16  
3 Traction & Weight Transfer    
Nov 6 Traction & Weight Transfer   Lab 9. Center Gravity, Stability
8 Traction & Weight Transfer    
10 Tractor Stability    (Homework 3, Power Trains)  Solutions
Nov 13 Tractor Stability Chap 14 (Homework 4, Traction & Stability & Hydraulics)                      Solutions
15 Hydraulic Fundamentals    
17 Hydraulic Pumps/Motors    
Nov 20-24 THANKSGIVING
Nov 27 Hydraulic Motors/Cylinders   Lab 10. Hydraulic Control
29 Basic Hydraulic Circuits    
1 Exam 3 (Titlepage)    
Dec 4 Basic Hydraulic Circuits   No Lab
6 Electronics / Additional Topics    
8 Additional Topics/Review    
Dec 11-15 Finals    


LAB REPORTS & QUIZZES:

1.You will be required to turn in a lab report, engineering letter each set of labs as told by the instructor. Most reports will be due the week following the actual lab. Working in groups may help you understand the material and is acceptable. However, STUDENTS ARE REQUIRED TO HAND IN INDIVIDUAL LABS (unless instructed otherwise) IN THEIR OWN WORDS AND FIGURES. DO NOT HAND IN LAB REPORTS THAT ARE ESSENTIALLY ELECTRONIC DUPLICATES (or with cosmetic modifications) OF EACH OTHER THIS WILL BE HEAVILY PENALIZED.

2.The reports you will turn in will be formal reports (unless otherwise instructed). The reports must be well organized, neat and orderly. The reports, tables and figures should be computer generated. The original data sheets may be included in appendices without change.

3.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.

4.Sample Calculations: Show one sample of each different calculation and or equation development. Make sure to show each step clearly (i.e. Show progression of units, include relations to theory, state reasons for manipulations. Do not just write down numbers and expect someone to understand what you did). If your units do not cancel to give the correct result you have probably done something wrong and should recalculate your data. This section will be a substantial portion of the value of the report since it shows you have a good understanding of the material and you know how the numbers from the spreadsheet were derived.

5. Lab material will be on the web a week before the lab. Everyone is expected to read the lab material before coming to class.

6.Reports are due one week from the date of assignment at the beginning of lab. Lab reports will be accepted late, but there will be a penalty of 5% per day for late labs (max penalty of 50%). No reports will be accepted after the reports are turned back. Reports will generally be worth 10 points.


Attendance/Makeups

Attendance to labs is required! Arrangements for missed labs must be made prior to the lab period.


Lab Regulations

1. In compliance with current law, SAFETY GLASSES ARE REQUIRED AND MUST BE WORN at all times.
2. SMOKING IS NOT PERMITTED in the laboratory area.
3. Wipe tools clean and return them to the tool cabinet at close of each period. A complete set of tools will be available at each work station therefore sharing of tools should not be necessary.

Grades

Calculation of Grades

Hour Exams (3 exams)

45%
Lab Reports and Exercises 30%
Final Exam 25%

Maximum Required Scores

A > 90%
B 81-90%
C 70-80%