The Study of Fuel-Saving Technology of GSI

2014 ◽  
Vol 1070-1072 ◽  
pp. 392-397
Author(s):  
Jun Hui Xu ◽  
Ming Qiu Gao ◽  
Ji Qiang Gao ◽  
Xiang Bao

In the background of the main technologies of fuel economy in automobiles developed to a certain stage, it is necessary to reduce fuel consumption and increase the engine efficiency by developing other auxiliary technologies such as improving the ratio of pure energy drive, low rolling resistance tires, tire pressure monitoring system and gear shift indicators (GSI). This article introduces the principle of GSI, analyses how GSI works in improving engine efficiency, and then evaluates the method for determination of the relative saving rate of fuel consumption, which method was introduced in the EU regulation EC No. 65/2012.

2018 ◽  
Vol 46 (2) ◽  
pp. 93-104 ◽  
Author(s):  
L. J. Bachman

ABSTRACT Data from air cavity thermistors, tire pressure–monitoring systems (TPMS), and SAE J1269 rolling resistance tests were analyzed to evaluate the significance of changes in tire pressure on rolling resistance during fuel economy tests of class 8 tractor trailers. Thermistor data show that air cavity temperatures vary, with the main increase happening during the warm-up run and measurable cooling during the fuel measurement breaks between runs. Inflation pressure also increases by 50–70 kPa during the warm-up run, but once the tire has warmed up, the pressure is more stable, rarely varying by more than 20 kPa during a test run. Results of SAE J1269 rolling resistance tests allow estimation of rolling resistance force for any specified load and inflation pressure. Using the test weight of the truck, the rolling resistance force was estimated for inflation pressures ranging from 550 to 860 kPa. The relationship between the inflation pressure and rolling resistance was roughly linear. The relationship was then used to estimate changes in fuel consumption due to changes in inflation pressure normalized to the cold inflation pressure. For each change of relative inflation pressure of 5%, rolling resistance would change by about 1%. Using a common return factor of a 1% change in fuel consumption for every 5% change in rolling resistance, a change in relative inflation pressure of 5% would result in a change of fuel consumption of about 0.2%. The precision of the J1321 fuel economy tests was measured to be plus or minus about 1%. This suggests that the warm-up run provided for the test method stabilizes the tire pressure and rolling resistance and that interference due to changes in rolling resistance during a test run or between runs is a concern only for tests that measure small changes in fuel consumption. While the results obtained here are used to assess the effect of inflation pressure on the SAE J1321 test and apply only to the particular tires tested, the method of analysis may be useful in the assessment of the effect of over- or underinflated tires on fuel consumption in the wider long-haul trucking fleet.


Mechatronics ◽  
2021 ◽  
Vol 74 ◽  
pp. 102492
Author(s):  
Simone Formentin ◽  
Luca Onesto ◽  
Tommaso Colombo ◽  
Alessandro Pozzato ◽  
Sergio M. Savaresi

Tire pressure monitoring device/system (TPMS) is an electronic device that monitors the air strain of an vehicle tire and indicates the pressure to the driver.Upkeep of tire strain in automobile is vital owing to the reality depletion within the strain of tire ends up in diminished combustible potency and future scratch in tires which ends up in substitution of tires fairly again and again. In this paper the used conception relies upon eliminating above problems and observing those facts continuously using pressure sensor with the help of some devices and wireless modules such as zigbee or rf-transreciever and also STM32 on-chip computer. A different mouth is distended other than conventional muzzle within that device is found which communicate via wireless apparatus and obtained with the help of the wireless module such as zigbee gift out of doors and also the signal is been dispatched to on-chip computer which computer screen units and unveil the strain name (name of tire) and actual strain on a screen monitor which notify the person to fill the air in tire. With the use of this system the user of the vehicle can eliminate the wheel is alignment and supply protection to the vehicle.


SINERGI ◽  
2019 ◽  
Vol 23 (1) ◽  
pp. 70 ◽  
Author(s):  
Lukman Medriavin Silalahi ◽  
Mudrik Alaydrus ◽  
Agus Dendi Rochendi ◽  
Muhtar Muhtar

Currently, the Tire Pressure Monitoring System (TPMS) only monitors the condition of a tire pressure. However, there are no particular reactions taking place after the value of its tire pressure is discovered. In fact, the value of a tire pressure determines driving comfort and safety Therefore, this research proposed a method to integrate a TPMS and a Pressure Sensor Base (PSB) with a particular reaction required to fulfill tires automatically. The proposed TPMS has an electronic device unit directly attached to a tire’s valve. This unit includes pressure sensors, microcontrollers, Bluetooth transmitters and batteries. An alert system is generated whenever tire pressure exceeds the maximum or minimum safe pressure level. Moreover, if the pressure measured is below the lowest level of the desired pressure, it will automatically activate the compressor. Several experiments have been carried out to analyze the proposed system. The integrated TPMS has proven to be able to be an alternative tool for the automotive sector to keep maintaining the tires and to improve a driving comfort and safety.


2021 ◽  
Vol 334 ◽  
pp. 02013
Author(s):  
Vladimir Zhulai ◽  
Vitaly Tyunin ◽  
Alex Shchiyenko ◽  
Alexander Krestnikov

The article considers the problem of the analytical determination of the fuel economy performance of earth-moving machines by the example of the road grader. The values of the road grader fuel consumption when performing the technological operations have been obtained and analyzed. The fuel balance of the EMM in the traction mode is presented. The fuel balance of the motor grader when digging soil has been defined and analyzed.


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