8car_transmission_design

8car_transmission_design - Gears Design and Simulation for...

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Gears Design and Simulation for Gears Design and Simulation for Car Transmission Car Transmission Jiting Li, Weidong Guo, Mileta M Tomovic School of Technology Mechanical Engineering Technology
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Outline c About the Car Transmission c Kinematic Design and Simulation of the Transmission c Strength Design of the Gear Mesh c Finite Elements Analysis of Gears Download the file: http://www.purdue.edu/discoverypark/PLM/SME/car_transmission.zip
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About the Car Transmission The transmission is used to increase the driving torque of the engine. It is connected to the engine through the clutch, and connected with drive shaft through U-joint. Driving System Illustration [1]
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Transmission Graphic Illustration [1] About the Car Transmission
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Kinematic Design and Simulation of the Transmission -999 -3.38:1 Reverse 3,375 1:1 4th 2,538 1.33:1 3rd 1,679 2.01:1 2nd 999 3.38:1 1st RPM at Transmission Output Shaft with Engine at 3375 rpm Ratio Gear Assume that the transmission is required to have five different gear ratios, listed in the following Table.
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Input Shaft Output Shaft Counter Shaft Idler Gear Shaft Z 23 Z 35 Z 27 Z 33 Z 40 Z 18 Z 25 Z 31 Z 20 Kinematic Design and Simulation of the Transmission To meet the requirement, the mechanism of the transmission is designed as follows.
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Kinematic Design and Simulation of the Transmission Z 18 Z 20 Z 40 Z 25 Gear 33 Z 33 18 31 Z 31 20 27 Z 27 40 35 Z 35 25 23 Z 23 Tooth number Tooth number Gear And the tooth number of the gears is listed in the following table. Note! The transmission mechanism comes from literature [2].
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Kinematic Design and Simulation of the Transmission Then the simulation is carried on to validate the kinematic design result. All the gears and shafts are first modeled and assembled in certain solid modeling software, such as Solidworks and Unigraphics, and then imported into the kinematic and dynamic analysis software ADAMS/View to do the kinematic simulations.
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First Gear Z 23 Z 35 Z 40 Z 18 38 . 3 18 23 40 35 Z Z Z Z GR 18 23 40 35 1 = × × = = Transmission ratio Kinematic Design and Simulation of the Transmission
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First Gear Simulation Kinematic Design and Simulation of the Transmission
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Second Gear Z 23 Z 35 Z 33 Z 25 01 . 2 25 23 33 35 Z Z Z Z GR 25 23 33 35 2 = × × = = Transmission ratio Kinematic Design and Simulation of the Transmission
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Kinematic Design and Simulation of the Transmission Second Gear Simulation
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Third Gear Transmission ratio 33 . 1 31 23 27 35 Z Z Z Z GR 31 23 27 35 3 = × × = = Kinematic Design and Simulation of the Transmission Z 27 Z 31 Z 23 Z 35
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Third Gear Simulation Kinematic Design and Simulation of the Transmission
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Fourth Gear Connecting Shaft Transmission ratio 1 GR 4 = Kinematic Design and Simulation of the Transmission
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Fourth Gear Simulation Kinematic Design and Simulation of the Transmission
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This note was uploaded on 05/24/2010 for the course MEC 7658h taught by Professor Madder during the Spring '10 term at Punjab Engineering College.

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8car_transmission_design - Gears Design and Simulation for...

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