Ford Focus engine technology is SCR technology.
SCR technology is known as the most popular and widespread off-machine diesel engine emission control technology. The full name is selective catalytic reduction technology. Its converter has strong selectivity, mainly for NOx emission control. The reducing agent of its reduction system can be various ammonia substances or various HCs.
Among them, urea (Urea-SCR) is used more frequently, and urea (Adblue) is a urea aqueous solution with a content of 32.5%. It can convert up to 95% of NOx. The catalyst generally uses artificial zeolite (zeolite) system and its operating temperature range is 250~500 degrees Celsius.
Extended information:
The working method of Ford Focus engine technology is as follows:
When the vehicle condition meets all other judgment conditions for engine shutdown, the ECM will control The engine stalls; when the signal light or road conditions allow continued driving, the ECM once again determines the driver's starting intention through the driver's operation (depressing the clutch), thereby controlling the starter to start the engine and quickly return the engine to normal operating conditions.
For vehicles equipped with automatic transmission, when the vehicle needs to stop and wait, press the brake pedal until it stops, and the engine will be shut down under EMC control. At this time, you can also shift the gear to P and release the brake. If you press the pedal, the engine will not start; when you need to continue driving, release the brake pedal and the engine will start immediately. If the gear has been in P before, the engine will start immediately when you shift into D.