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Air injection can also be achieved by taking advantage of the negative pressure pulses in the exhaust system at engine idle. A sensitive reed valve assembly called the aspirator valve is placed in the air injection pumping, which draws its air directly from the clean side of the air filter. During engine idle, brief but periodic negative ...
One of the first-developed exhaust emission control systems is secondary air injection. Originally, this system was used to inject air into the engine's exhaust ports to provide oxygen so unburned and partially burned hydrocarbons in the exhaust would finish burning. Air injection is now used to support the catalytic converter's oxidation ...
Starting with the 1986 model year, the AMC straight-4 engines used a throttle body injection (TBI) or single-point, fuel injection system with a new fully computerized engine control. [3] In addition to cycling the fuel injector (pulse-width time, on–off), the engine control computer also determined the ignition timing, idle speed, exhaust ...
JBT Corporation, or John Bean Technologies Corporation, is a food processing machinery and automated vehicle company.JBT Corporation was incorporated in 2008 when FMC Technologies divested its non-energy businesses.
Throttle Body Fuel Injection Systems: 1981: 1993: Formerly a Zenith Radio Factory. AC Rochester: Wichita Falls, Texas: United States: AC Air Filters: 1972: 2008: Transferred to Delphi Automotive Systems in 1999. Closed by Delphi in 2008. ACDelco: Flint, Michigan: United States: AC Spark Plugs: 1912: 1976: Located on Industrial Ave. Production ...
Digifant is an Engine Management System operated by an Engine Control Unit that actuates outputs, such as fuel injection and ignition systems, using information derived from sensor inputs, such as engine speed, exhaust oxygen and intake air flow. [1] Digifant was designed by Volkswagen Group, in cooperation with Robert Bosch GmbH.
In 1981, a Delco Electronics ECU was used by several Chevrolet and Buick engines to control their fuel system (a closed-loop carburetor) and ignition system. [10] By 1988, Delco Electronics was the leading producer of engine management systems, producing over 28,000 ECUs per day.
If the engine is naturally aspirated, an air temperature sensor is located in the air flow meter to work out the air mass. However, if the engine is turbocharged , an additional charge air temperature sensor is used to monitor the temperature of the inducted air after it has passed through the turbocharger and intercooler , in order to ...