Abstract
EMS is a control system on the engine to regulate the proper mixing of air and fuel, accurate ignition timing, and control of other systems on the engine, according to the conditions and workload of the vehicle. The EMS component consists of sensors, ECU, and actuator. Engine control is fully regulated by the ECU. After getting data from the sensor, the ECU sensor will signal the actuator to control the engine, so that the work of the engine can be controlled according to the conditions of the engine. The effect of the cooling water temperature sensor is very large at stationary (Idle Speed Control/ISC). This research method is carried out by varying the temperature of cooling water (Engine Coolant Temperature/ECT) to get the mass of gasoline, air mass, air fuel ratio, engine speed, ignition angle, and gasoline consumption at each ISC load. The results of the research and data processing show that gasoline consumption will decrease every time the cooling water temperature increases. The AC (Air Conditioner) load ranges from 1,123 x 10-2 to 2,164 x 10-2 kg/hour, the power steering load ranges from 6,311 x 10-3 to 9,482 x 10-3 kg/hour, the electrical load ranges from 6,608 x 10-3 to 7,876 x 10-3 kg/hour and without load ranges from 6,024 x 10-3 to 7,920 x 10-3kg/hour. From these data it can be concluded that the effect of the ECT sensor is very large on engine performance at stationary rotation (ISC).Keywords: Sensor, ECU, Actuator.
Highlights
EMS adalah sistem pengaturan pada engine untuk mengatur pencampuran udara dan BBM yang tepat, waktu pengapian yang akurat, serta pengontrolan sistem-sistem lain pada engine, sesuai dengan kondisi dan beban kerja pada kendaraan
a control system on the engine to regulate the proper mixing of air and fuel
The EMS component consists of sensors
Summary
Waktu pembukaan katup dipengaruhi oleh konstruksi camshaft. Pada umumnya besar sudut pembukaan katup hisap dan katup buang adalah 230o sampai. Pembukaan katup injector terjadi ketika lilitan kabel dialiri tegangan listrik dari ECU, sehingga terjadi electromagnetic pada lilitan tersebut dan akan membuka lubang penyemprot pada injector. Maka kemagnetan pada kumparan akan hilang sehingga lubang penyemprotan akan tertutup oleh pegas pengembali. Banyaknya bahan bakar yang disemprotkan tergantung dari lamanya pembukaan katup injector tergantung oleh tegangan yang diberikan oleh ECU. AFR (Air Fuel Ratio) AFR (Air Fuel Ratio) adalah perbandingan massa udara dan bahan bakar. Secara teoritis campuran udara dan bahan bakar yang sempurna adalah campuran bahan bakar yang menghasilkan gas buang CO2 dan H2O
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