Research on Variable Cylinders of the Tandem 4-Cylinder Gasoline Engine for Fuel Economy

2008 ◽  
Vol 20 (1) ◽  
pp. 75-81 ◽  
Author(s):  
Kouki Yamaji ◽  
◽  
Hirokazu Suzuki ◽  
Keyword(s):  
Fuel Consumption ◽  
Fuel Economy ◽  
Gasoline Engine ◽  
Combustion Engine ◽  
Electronic Control Unit ◽  
Control Unit ◽  
Engine Fuel ◽  
Electronic Control ◽  
The Difference ◽  
Predetermined Time

With progress in internal combustion engine fuel economy, variable cylinder systems have attracted attention. We measured fuel consumption in cylinder cutoff by stopping the injector alone, collected data changing the location and number of cutoff cylinders and when varying the cutoff cylinder, and compared the difference in fuel cost reduction. A transistor is inserted serially into the injector control circuit of the electronic control unit (ECU). By controlling the transistor via microcomputer, the injector is turned on or off independently from ECU control in obtain cylinder cutoff. The amount of fuel consumption is measured using enhancement mode of a failure diagnostic device based on the OBD II standard to collect injection time and rotational speed of the injector for a predetermined time and calculated based on this data. We confirmed that by stopping the injector alone, fuel consumption was reduced 6 to 22% and is reduced when the cutoff cylinder is varied.

scholarly journals A Recent Electronic Control Circuit to a Throttle Device

Electronics ◽  
2020 ◽  
Vol 9 (1) ◽  
pp. 191 ◽  
Author(s):  
Leonardo Acho ◽  
Gisela Pujol-Vázquez ◽  
José Gibergans-Báguena
Keyword(s):  
Gasoline Engine ◽  
Control Strategies ◽  
Electronic Control Unit ◽  
Control Unit ◽  
Control Circuit ◽  
Electronic Control ◽  
Control Scheme ◽  
Control Objective ◽  
Electronic Controller ◽  
Throttle Device

The main objective of this paper was to conceive a new electronic control circuit to the throttle device. The throttle mechanical actuator is the most important part in an automotive gasoline engine. Among the different control strategies recently reported, an easy to implement control scheme is an open research topic in the analog electronic engineering field. Hence, we propose using the nonlinear dwell switching control theory for an analog electronic control unit, to manipulate an automotive throttle plate. Due to the switching mechanism commuting between a stable and an unstable controllers, the resultant closed-loop system is robust enough to the control objective. This fact is experimentally evidenced. The proposed electronic controller uses operational amplifiers along with an Arduino unit. This unit is just employed to generate the related switching signal that can be replaced by using, for instance, the timer IC555. Thus, this study is a contribution on design and realization of an electronic control circuit to the throttle device.

SOC Detection of Diesel Engines Based on Online Estimation of Motored Pressure

2013 ◽  
Author(s):  
Guojing Gao ◽  
Fuyuan Yang ◽  
Minggao Ouyang ◽  
Cheng Fang
Keyword(s):  
Detection Method ◽  
Electronic Control Unit ◽  
Control Unit ◽  
Detection Algorithm ◽  
Cylinder Pressure ◽  
Electronic Control ◽  
Adiabatic Exponent ◽  
Pressure Trace ◽  
The Difference ◽  
Start Of Combustion

In this paper, a diesel SOC (Start of Combustion) online detection method is developed in a diesel engine equipped with serial produced in-cylinder pressure signal sensors. Motored pressure trace is estimated in real time and the difference between the measured actual cylinder pressure and the estimated motored pressure is calculated. SOC is defined as the separation point of the two different pressure traces. In order to realize accurate motored pressure estimation, a thermodynamic analysis of the motored process of engines is done and a new concept “equivalent adiabatic exponent” is proposed. The pressure difference 0.2 MPa is taken as the criteria of combustion start. The SOC detection algorithm is executed in a MCU based electronic control unit. Engine tests are done in steady states as well as dynamic states.

scholarly journals Sistem Pakar Mendeteksi Kerusakan ECU (Electronic Control Unit) pada Motor Injeksi Honda PCX di PT. Supra Jaya Abadi Titi Kuning Medan dengan Metode Certainty Factor

2021 ◽  
Vol 4 (1) ◽  
pp. 78
Author(s):  
Rinal Trisnawan ◽  
Ahmad Fitri Boy ◽  
Ita Mariami
Keyword(s):  
Internal Combustion Engine ◽  
Combustion Engine ◽  
Electronic Control Unit ◽  
Control Unit ◽  
Internal Combustion ◽  
Electronic Control ◽  
Certainty Factor

Mengingat tingginya pengguna sepeda motor matic injeksi saat ini timbul permasalahan bahwa tidak semua pengguna motor matic injeksi memiliki kemampuan untuk memperbaiki kerusakan sepeda motornya. Pengguna lebih mempercayakan masalah itu pada mekanik bengkel. Beberapa jenis kerusakan yang ada pada mesin sepeda motor injeksi salah satunya adalah kerusakan pada ECU (Electronic Control Unit). ECU (Electronic Control Unit) adalah sebuah perangkat elektronik yang berfungsi untuk mengatur operasi dari internal combustion engine(mesin pembakaran).Untuk Mengatasi permasalahan tersebut dalam penelitian ini akan dibangun sistem yaitu Sistem Pakar dengan menggunakan sebuah metode yaitu metode Certainty Factor untuk mendeteksi kerusakan berdasarkan nilai MB ( Measure of Beliefe ) dan MD ( Measure of Disbeliefe) dari gejala-gejala kerusakan yang terlihat pada kendaraan. Nilai Certainty Factor digunakan untuk menentukan kerusakan berdasarkan rules yang telah ditentukan, serta mengetahui seberapa besar persentase keberhasilan diagnosa kerusakan dengan menggunakan metode Certainty Factor.Dalam masalah yang dibahas pada penelitian ini akan di rancang sebuah perangkat lunak berbasis desktop yang diharapkan menjadi solusi pemecahan masalah. Hasil penelitian merupakan terciptanya sebuah aplikasi Sistem Pakar dengan Metode Certainty Factor yang dapat membantu untuk mendiagnosa kerusakan ECU pada mesin motor injeksi.

scholarly journals Estudio de los efectos en los sistemas de iluminación electrónica en función de la calidad de la energía en los sistemas automotrices

2019 ◽  
pp. 14-19
Author(s):  
José Mendoza-Rivera ◽  
Mario Alberto Juarez-Balderas ◽  
Adolfo Rafael Nunez-Lopez ◽  
Gerardo Vázquez-Guzman
Keyword(s):  
Combustion Engine ◽  
Electronic Control Unit ◽  
Control Unit ◽  
Electronic System ◽  
Electronic Control ◽  
Lighting System ◽  
Flow Sensors ◽  
Mechanical Parts ◽  
Automotive Systems ◽  
Power Stage

Currently, the combustion cars of a large number of electronic equipment: the electronic control unit, position sensors, flow sensors, automatic brake system, ABS system, among others. Currently and in broad strokes cars a set of mechanical parts controlled by an electronic system. In the future, cars are fully electronic, but prior to this step, hybrid cars will be developed which have their respective electric motors controlled by a power stage and their internal combustion engine (Cevallos 2016). This paper identifies the disturbances in the automotive systems that are introduced to the micro network of the automobile, its effects to analyze the effects that may have on the LED lighting system. Objetivos: Estudiar los transitorios y permanentes en automóviles para clasificar su comportamiento. Analizar las perturbaciones que pudieran ser perjudiciales para los sistemas electrónicos del automóvil. Cuantificar de perturbaciones a partir de la Transformada Rápida de Fourier (FFT). Estudio y análisis de los efectos a través de la simulación numérica de los transitorios en convertidos de CD-CD empleado para la iluminación.

scholarly journals TO THE COMPARATIVE EVALUATION OF FUEL ECONOMY OF THE BTR-70 CAR WITH DIFFERENT TRANSMISSION

2021 ◽  
Vol 1 (50) ◽  
pp. 198-209
Author(s):  
Sakhno V ◽  
◽  
Dykich O ◽  
Keyword(s):  
Fuel Consumption ◽  
Fuel Economy ◽  
Comparative Evaluation ◽  
Gasoline Engine ◽  
Fuel Efficiency ◽  
Steady Motion ◽  
Gear Ratio ◽  
Operating Conditions ◽  
Engine Fuel ◽  
Gasoline Engines

The article considers the issue of choosing a gearbox for the modernization of the BTR-70 by replacing two gasoline engines with two diesels. The object of research is the fuel economy of the BTR-70 car with different gearboxes when replacing two gasoline engines with two diesels. The purpose of the work – to determine the type and gear ratio of the transmission, which provides the best fuel efficiency of the car. Research method - mathematical modeling. When replacing a gasoline engine with a diesel of a different power and a different speed range, it is necessary to determine the gear ratio so as to provide the car with the required level of speed properties in the specified operating conditions with minimal fuel consumption. Due to the fact that the modernization of the BTR-70 involves the replacement of the engine and transmission, the further search for the gearbox was carried out on the basis of analysis of existing structures by the maximum torque of the engine. A five-speed and eight-speed MAZ gearbox and a six-speed Mercedes-Benz G 85-6 / 6.7 gearbox were used for analysis. Taking into account the fact that at a given coefficient of drag  = 0.03 the car can move only in direct gear, then for all gearboxes the fuel characteristics of steady motion will be the same as the control fuel consumption, which was 30 l / 100 km. In terms of fuel consumption during the acceleration of the car and the average kilometer fuel consumption when driving on paved roads, preference should be given to a car with a Mercedes-Benz G 85-6 / 6,7 transmission and only when driving in difficult road conditions, preference should be given to the car with 8-speed MAZ-5335 transmission. KEY WORDS: CAR, ENGINE, FUEL ECONOMY, TRANSMISSION, GEAR RATING, SPEED, COMPARATIVE EVALUATION

scholarly journals A design of fuel control unit for eco vehicle engines

2021 ◽  
pp. 63-68
Author(s):  
Nguyen Trong Thuc
Keyword(s):  
Fuel Economy ◽  
Fuel Injection ◽  
Electronic Control Unit ◽  
Control Unit ◽  
Control Circuit ◽  
Electronic Control ◽  
Ignition Timing ◽  
Sensors And Actuators

Nowadays, solution of fuel injection is the best way for design of fuel economy vehicle while mechanical improvement has almost reached its limit. This article shows result of the research and making the fuel injection electronic control unit (ECU) used for two annually contests named Honda EMC and Shell ECO-marathon. The control circuit is designed and coded with Arduino Mega, sensors and actuators equipped in popular cars. The circuit also allows users to change the fuel injection map and the ignition timing map to suit ECO vehicle, its necessary data help driver to have better seeing and adjusting during contest time. This permit contestant teams to modify base on their design and showed data can help contest process become more optimized and simply.

Critical review towards thermal management systems of lithium-ion batteries in electric vehicle with its electronic control unit and assessment tools

2021 ◽  
pp. 095440702098286
Author(s):  
C Kannan ◽  
R Vignesh ◽  
C Karthick ◽  
B Ashok
Keyword(s):  
Lithium Ion Batteries ◽  
Thermal Management ◽  
Electronic Control Unit ◽  
Lithium Ion ◽  
Control Unit ◽  
Assessment Tools ◽  
Electronic Control ◽  
Battery Thermal Management ◽  
Thermal Management System ◽  
Battery Thermal Management System

Lithium-ion batteries are facing difficulties in an aspect of protection towards battery thermal safety issues which leads to performance degradation or thermal runaway. To negate these issues an effective battery thermal management system is absolute pre-requisite to safeguard the lithium-ion batteries. In this context to support the future endeavours and to improvise battery thermal management system (BTMS) design and its operation the article reveals on three aspects through the analysis of scientific literatures. First, this paper collates the present research progress and status of various battery management strategies employed to lithium-ion batteries. Further, to promote stable and efficient BTMS operation as an initiation the extensive attention is paid towards roles of BTMS electronic control unit and also presented the essential functionality need to consider for designing best BTMS control strategy. Finally, elucidates the various unconventional assessment tools can be employed to recognize the suitable thermal management technique and also for establish optimum BTMS operation based on requirements. From the experience of this article additionally delivers some of the research gaps identified and the essential areas need to focus for the development of superior lithium-ion BTMS technology. All the contents reveal in this article will hopefully assist to the design commercially suitable effective BTMS technology especially for electro-mobility application.

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