On an engine with sequential injection, this is simple enough – get the engine idling at 14.7:1 for gasoline, and you’re good to go. Correct FuelĮngines don’t like to idle lean a lean air/fuel ratio is one of the biggest causes of a surging idle. These problems should be addressed individually.
To get a steady idle, you need three things in place: correct fuel, correct timing, and correct airflow. This may seem counter-intuitive, but consider this: If the engine is idling at constant load with the throttle held at a constant opening, shouldn’t you have a constant idle speed? If your idle surges or hunts under these conditions, and your idle control valve is staying at one opening value, the idle control settings are not the problem. The first key may surprise many novice tuners: The idle control settings are not the most important thing to adjust to get a smooth idle.
It is very important that there be no exhaust gas leaks upstream of the oxygen sensor.“How do I get a smooth idle like my stock ECU had?” It’s a common enough question to warrent a small article with tips for how to get the idle in tune.
They can put in two oxygen sensors, one in each bank, with and set your MicroSquirt® controller to use both of them. Many manufacturers did this in the early days of electronic fuel injection, They can put a sensor in just one bank, as close as possible to the point where the exhaust gases from that cylinder merge, and assume the other bank is the same. They can use one sensor in the crossover pipe between the exhaust pipes (which they may have to add), however the sensor will be a long way from the heat of combustion and you may require a heated sensor (see below),. People who have engines with separate cylinder banks (V6, V8, etc.) will have to make a choice: Your MicroSquirt®™ EFI controller can read from one or two oxygen sensors. Setting the Cold Start and Warm-Up EnrichmentsĪn exhaust gas oxygen sensor (EGO) is very useful for setting up your MicroSquirt® EFI controller volumetric efficiency table, and while it is highly recommended, it is not essential. Manifold Absolute Pressure (MAP) Sensor. How an Internal Combustion Spark-Ignition Engine Works. What are the advantages & disadvantages?. MicroSquirt® Introduction Click on our menu buttons immediately below to find MegaSquirt® information quickly:
0 kommentar(er)
