Smart Clutch: An Automated Clutch That Can Be Used in Manual Transmission Driven Vehicles

2016 ◽  
Author(s):  
Nitin Srinath ◽  
Aditya Shashidhar ◽  
Prajwal G. Shanthamurthy ◽  
Vedanth Reddy ◽  
Hitesh Bhadana
Keyword(s):  
Pressure Sensor ◽  
Transmission Efficiency ◽  
Manual Transmission ◽  
Driving Experience ◽  
Clutch Pedal ◽  
Take The Best ◽  
Automatic Transmissions

There are two basic types of transmissions — manual and automatic. While manual transmissions have greater transmission efficiency and better overall driving experience, it is difficult and not as easy to handle as automatic transmissions mainly due to the presence of the clutch pedal. Automatic transmissions make life are a lot easier to operate but are less efficient. So, the aim of this project is to take the best of both worlds and combine it in one i.e. the experience of driving a manual with the ease of an automatic. For this, the intention is to use a pressure sensor to detect when the gears have to be changed and automatically disengage the clutch, hence removing the need for the clutch pedal.

Smart Multimode Transmission for Automobiles

2017 ◽  
Author(s):  
Nitin Srinath ◽  
Ashwin Kumar ◽  
Sharnappa Joladarashi
Keyword(s):  
Control Algorithm ◽  
Automatic Transmission ◽  
Transmission Efficiency ◽  
Manual Transmission ◽  
Driving Experience ◽  
User Input ◽  
Take The Best ◽  
Automatic Mode ◽  
Automatic Transmissions ◽  
Manual Mode

There are two basic types of transmissions — manual and automatic. While manual transmissions have greater transmission efficiency and better overall driving experience, it is difficult and not as easy to handle as automatic transmissions. Automatic transmissions make life a lot easier for the driver but are less efficient and laggard. So, the aim of this project is to take the best of both worlds and combine it in one, i.e. a transmission system that is capable of working as both a manual and an automatic transmission. For this, we plan to automate a regular manual transmission with a manual override option on both the clutch and the gearbox systems. Motors will be used to control the clutch and the changing of gears in the gearbox. In the manual mode, the motors will be operated by user input switches (clutch pedal and stick shift). In the automatic mode, the same motors will be controlled by a control algorithm based on various inputs like weight of the car, inclination, speed of the engine and the car etc.

Manual Transmission Efficiency Trends and Characteristics

1994 ◽  
Author(s):  
Joseph J. Greenbaum ◽  
Michael A. Kluger ◽  
Barry E. Westmoreland
Keyword(s):  
Transmission Efficiency ◽  
Manual Transmission

Design of Tire Pressure Sensor Based on High Integrated Wireless Sensor

2011 ◽  
Vol 148-149 ◽  
pp. 973-976
Author(s):  
Chun Yan Wang
Keyword(s):  
Energy Consumption ◽  
Circuit Design ◽  
Pressure Sensor ◽  
Transmission Efficiency ◽  
Wireless Transmission ◽  
Wireless Sensor ◽  
Pressure Monitoring ◽  
Tire Pressure ◽  
Moving Vehicle ◽  
Reduce Energy Consumption

This paper focus on how to improve wireless transmission efficiency, reduce the quality and volume of TPMS to reduce impact of tire balance in a moving vehicle. A tire pressure monitoring transmitter based on high integrated wireless sensor MPXY8300 is described in this paper and the hardware structure is being put forward. Introduced the way to reduce energy consumption, and wireless circuit design. This system can monitor the inner practical pressure and temperature of each tire and the security accidents can be avoided effectively.

Research on the relationship between transmission efficiency and input torque of manual transmission

2019 ◽  
Vol 20 (6) ◽  
pp. 611
Author(s):  
Shu Yan ◽  
Geng Li ◽  
Shaopeng Tian ◽  
Qingxing Zheng
Keyword(s):  
Test Bench ◽  
Transmission Efficiency ◽  
Calculation Model ◽  
Manual Transmission ◽  
Bench Test ◽  
Theoretical Simulation ◽  
Factors Affecting ◽  
Allowable Range ◽  
Dc Bus ◽  
Input Torque

Based on the manual transmission of a micro car, this paper would present the analysis of the factors affecting the transmission efficiency (TE) and the calculation formula of TE. Accordingly, the calculation model of Matlab/Simulink TE would be built to figure out how TE varies with input torque. Meanwhile, a set of manual transmission test bench would be designed and used to verify the theoretical simulation results. It adopts a common DC bus energy feedback closed system which can feedback the power generated by the load motor to the grid through the DC bus so as to save the electricity and produce less pollution. Therefore, while the test bench can reflect the variation trend of TE about the manual transmission truly, it is comparatively reliable. Apart from being energy-saving, its unique versatility could definitely predict its exceptional potential. The data of TE obtained from the test bench are compared with the simulation result. It showed that the TE of bench test and simulation result are similar, though companied by less than 2% error difference which is within the allowable range. Most importantly, the bench test results proved the validity of the theoretical analysis statistically, which is of great necessity and significance to the research of TE.

scholarly journals An Experimental Investigation of Power Losses in Manual Transmission Gear Box

2012 ◽  
pp. 1-5
Author(s):  
Prakash D Pate ◽  
J.M. Patel
Keyword(s):  
Power Loss ◽  
Transmission Efficiency ◽  
Front Wheel ◽  
Operating Conditions ◽  
Manual Transmission ◽  
Experimental Methodology ◽  
Transmission Power ◽  
Power Losses ◽  
Oil Viscosity ◽  
Experimental Database

In this study, the influence of a variety of operating conditions on the power losses and efficiency of an automotive manual transmission was investigated experimentally. An experimental methodology was developed to measure power losses of a manual transmission under both loaded and unloaded conditions while all operation parameters were controlled tightly. A set of fixtures and instrumentation were designed and implemented to apply the experimental methodology to a five-speed, manual transmission from a front-wheel-drive passenger vehicle. Experimental parametric studies were performed to quantify the influence of operating conditions including load, oil viscosity and oil volume on load-dependent (mechanical) and load-independent (spin) power losses of the transmission. Analysis of the power loss data revealed that all three of these parameters influenced the components of the transmission power loss significantly, and specific conclusions were drawn in order to aid attempts to increase overall transmission efficiency. The experimental database formed as a result of this study is extensive so as to allow a complete validation of transmission power loss models.

scholarly journals ANALISA PENGEMBANGAN SISTEM SYNCCHROMESH UNTUK PENINGKATAN EFISIENSI PADA KENDARAAN LISTRIK

2019 ◽  
Vol 17 (3) ◽  
Author(s):  
Emir Ridwan ◽  
Fuad Zainuri ◽  
Danardono Danardono ◽  
M. Adhitya ◽  
Sonki Prasetya ◽  
...  
Keyword(s):  
Control Algorithm ◽  
Dynamic Models ◽  
Transmission Efficiency ◽  
Manual Transmission ◽  
Matlab Simulink ◽  
Motor Efficiency ◽  
Power Draw ◽  
Optimal Value ◽  
Replacement Clutch ◽  
The Mathematical Model

ABSTRACTThe transmission to be developed in this research a manual transmission type synchromesh which will be combined with the addition of replacement clutch in the form of cone. From the research of electric vehicles that have been carried out still retain the use of manual transmission for changing from conventional vehicles fuels oil by replacing the engine with a motor as a driver. This research was conducted to design synchromesh system on manual transmission which allows gearshift done without reduction of torque in one axis so as to produce gear shifting that does not experience slowing of vehicle to improve motor efficiency in electric vehicle. The mathematical model for the propulsion system is developed using the Matlab / Simulink software package, where the throttle engine angle and the power draw synchronously as a control signal to adjust the synchromesh in shifting then simulate, process and compare to obtain the effectiveness value of the control algorithm . The designs that have been made will be tested to obtain the optimal value of the transmission performance that has been designed. The simulation image of the development of the shift in the development manual transmission uses dynamic models of external and internal linkage, synchronization and drivetrain output.Keywords: transmission , efficiency, synchromesh, simulinkABSTRAKTransmisi yang akan dikembangkan pada penelitian ini adalah transmisi manual jenis synchromesh yang akan dikombinasikan dengan penambahan pengganti kopling berupa cone .Dari penelitian kendaraan listrik yang sudah dilakukan tetap mempertahankan penggunaan transmisi manual karena merubah dari kendaraan konvensional berbahan bakar minyak dengan menggantikan mesin dengan motor sebagai penggerak. Penelitian ini dilakukan untuk mendesain sistem synchromesh pada transmisi manual yang memungkinkan perpindahan gigi dilakukan tanpa pengurangan torsi di salah satu poros sehingga menghasilkan perpindahan gigi yang tidak mengalami perlambatan kendaraan untuk meningkatkan efisiensi motor pada kendaraan listrik. Model matematika untuk sistem propulsi dikembangkan dengan menggunakan paket perangkat lunak Matlab / Simulink , di mana sudut mesin throttle dan kekuatan menarik sinkron sebagai sinyal kontrol untuk mengatur synchromesh pada perilaku pergeseran, kemudian hasinya simulasi, diolah dan dibandingkan untuk mendapatkan nilai efektivitas algoritma control. Rancangan yang telah dibuat akan diuji untuk mendapatkan nilai optimal dari unjuk kerja transmisi yang telah dirancang .Gambaran simulasi pengembangan pergeseran pada transmisi manual pengembangannya menggunakan model dinamis dari eksternal dan internal linkage, sinkronisasi dan output drivetrain.Kata kunci : transmisi, efisiensi, synchromesh, simulink

Control of Selectable One-Way Clutch in GM Six-Speed Automatic Transmissions

2009 ◽  
Author(s):  
Chunhao J. Lee ◽  
Farzad Samie ◽  
Chi-Kuan Kao
Keyword(s):  
Engine Speed ◽  
Control Strategies ◽  
Transmission Efficiency ◽  
Reverse Direction ◽  
Passenger Vehicle ◽  
Shift Quality ◽  
Automatic Transmissions ◽  
The One ◽  
Free Spins ◽  
Force Pressure

Automatic transmissions use one-way clutches and regular clutches to control gear shifts. Regular one-way clutch locks in one direction and free spins (freewheeling) in the other direction and thus provides good shift quality. However, a clutch is needed if the freewheeling direction needs to be locked. The advantage of a selectable one-way clutch (SOWC) is that it can be designed to act like a regular one-way clutch, fully freewheels or locks in both directions. In the GM six-speed transmissions, there is one one-way clutch which is accompanied by a clutch CB1R to control between 1st gear and reverse direction. The study is to replace the one-way clutch and CB1R clutch with simply one selectable one-way clutch in GM 6-speed transmissions (1). This will eliminate one transmission clutch, reduce weight and cost, and improve transmission efficiency. The proposed design of transmission is applied to a GM SUV and a GM passenger vehicle. Different from a regular clutch, which can be applied with force/pressure from high slippage to lock-up between two elements, a selectable one-way clutch can only be applied to a lock-up position when the slippage between two elements is near zero speed. Also, an SOWC can only be released when there is no torque or force carried by the clutch while a regular clutch can be easily released by dropping the applied force/pressure. These requirements impose challenges of the control strategies of the SOWC, especially during the scenarios such as 2–1 engine idle downshift (engine braking) and 1–2 upshift (coasting). This paper reviews hardware design, vehicle implementation, and focuses on control of the selectable one-way clutch. Vehicle results demonstrate static and rolling garage shifts, 1–2 upshifts, 2–1 and coast downshifts. Also demonstrated is the successful application of engaging 1st gear engine braking with the SOWC. This control involves coordination between the engine speed and SOWC slip speed, and the apply/release of the device.

scholarly journals Effect of bearing thermally induced preload on the efficiency of automotive manual transmission under RDE

2019 ◽  
Vol 233 (21-22) ◽  
pp. 7423-7441 ◽  
Author(s):  
A Laderou ◽  
M Mohammadpour ◽  
S Theodossiades ◽  
A Wilson ◽  
R Daubney
Keyword(s):  
Dynamic Model ◽  
Influencing Factors ◽  
Relevant Literature ◽  
Transmission Efficiency ◽  
Operating Conditions ◽  
Manual Transmission ◽  
Effect Of Temperature ◽  
System Perspective ◽  
Total Transmission ◽  
Frictional Losses

In order to calculate the efficiency of an automotive manual transmission, taking into consideration the effect of its most power consuming components – gears and bearings – as well as the interactions between them is of high importance. In this paper, a dynamic model has been developed which can predict the frictional losses of a complete gearbox as a system and, thus, its efficiency. The effect of temperature on bearing preload is also considered and taken into account from a system perspective identifying its effect on the bearings frictional losses (as well as the overall efficiency). The operating conditions used are snapshots of the Real Driving Emissions driving cycle, which is a standard metric for automotive manufacturers. Results show that doubling the temperature can lead to 120% increase of the bearing losses and up to 140% increase of the total transmission losses. The effect of the variation of operating conditions (velocity and torque) is also taken into account. The novelty of this paper lays in the development of a dynamic model which takes into account the performance of a complete gearbox under transient operating conditions, as well as the interaction among its main components and the ability to make changes on the influencing factors of transmission efficiency so that their effect on the complete gearbox efficiency can be tracked. This has not been yet reported in the relevant literature which mainly focuses on the influencing factors of transmission power loss and efficiency experimental measurements under various operating conditions for gear pairs instead of complete gearboxes.

Sign in / Sign up

Export Citation Format

Share Document