The Nissan ECCS (Electronic Concentrated Engine Control System) contains a microprocessor that improves fuel efficiency and reduces exhaust emission levels. In reaction to the engine’s varied operating conditions, fuel, spark timing, exhaust gas recirculation (EGR) rate, and idle speed are all centrally controlled. This method is especially useful when the engine is running slowly and there is little load. To get the best three-way catalyst performance, the fuel delivered to the engine is feedback-controlled using an oxygen sensor. The computer adjusts the spark-timing and EGR rate to predetermined values for the most cost-effective fuel consumption and best exhaust emissions. The vehicle fully conformed with the Japanese exhaust pollution rules at a 10% increase in fuel efficiency when the ECCS was put in an in-line six-cylinder, 2.8 L engine fitted in a 3500 lb inertia weight class vehicle. The car also maintained good driveability. ECCS also lessens the need for engine tune and maintenance while enhancing engine performance (such as cold start and warm-up characteristics).
- Additional Notes:
- Conference held October 31–November 2, 1979; published in HS-805 233 (TRIS 361554), “International Automotive Fuel Economy Research Conference (1st) Proceedings,” Washington, D.C., 1980, pp. 212–9.
ECCS? WAIT, WHAT
information is a joke This is the genuine article: Electronic concentrated engine control system, abbreviated E C C S. There are THREE FLOWS: electrical flow, fuel flow, and air flow.
Nissan Will Discharge A New Forklift The array of gasoline/LPG models includes ECCS (Electronic Concentrated Engine Controlled System) engines. The engines effectively limit the emission of dangerous substances including carbon monoxide and hydrocarbons and comply with U.S. EPA regulation (effective as of January 2004). The Nissan ECCS engines are among the cleanest industrial vehicle engines in the world, especially considering that they reduce nitrogen oxide emissions levels by 99% when compared to those of conventional versions.
Nissan has referred to its electronic engine management system, also known as ECCS, or “Electronic Concentrated Control System,” for many years. Although the fundamental idea behind all electronic engine controls is the same—a computer giving operating parameter orders based on input from sensors and data stored in ROM—we should point out a few noteworthy features unique to typical late-model Nissans:
Two injection modes are available. The injectors are powered on consecutively during typical operating conditions to maximize efficiency. When the system switches to its fail-safe programming or when the engine is being started, simultaneous injection is used.
There are three methods for dealing with errors. The “Fail-Safe” mode is activated if the computer detects a coolant temperature or detonation sensor signal that is out of range. The flawed signal is disregarded and replaced with stored data. In the “Backup” mode, data from a malfunctioning sensor circuit is swapped out with data from a functioning one. For instance, the ECU uses the signal from the throttle position sensor in the event that the air flow meter is malfunctioning. Finally, there is the “Limp-Home” mode, which keeps the car “minimally driveable,” as the factory training literature so honestly states, in case the brain itself has some sort of electrical hemorrhage.
-A “clamping” function has been added in order to prevent unequal idle in closed loop. In other words, the injector pulse width is maintained at a fixed value, which is the mean of a reading of dynamic adjustments taken every 5 to 10 seconds. – The ECU’s self-learning capabilities—it records and memorizes input “sets” to update ROM data—provide faster and more precise mixture control.
JT240Z
The term “ECCS” describes the kind of fuel injection system utilized in the turbo Zs starting in 1981 and nearly all Nissans after 83. “Electronic Concentrated Control System” is what ECCS stands for. The “Electronic Control Unit,” or “ECU,” is simply referred to as the “Electronic Control Unit” in all fuel injection systems. Your vehicle’s ECU should be situated in the kick panel on the driver’s side. A fuel pump modulator under the dash also powers the fuel pump. It appears to be a tiny silver metal box.