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2. Manifold vacuum - Wikipedia

   en.wikipedia.org/wiki/Manifold_vacuum

   When the throttle is opened (in a car, the accelerator pedal is depressed), ambient air is free to fill the intake manifold, increasing the pressure (filling the vacuum). A carburetor or fuel injection system adds fuel to the airflow in the correct proportion, providing energy to the engine. When the throttle is opened all the way, the engine's ...

3. Manifold injection - Wikipedia

   en.wikipedia.org/wiki/Manifold_injection

   Manifold injection is a mixture formation system for ... that is controlled by an intake manifold vacuum-driven airflow sensor. The fuel distributor does not have to ...

4. Jetronic - Wikipedia

   en.wikipedia.org/wiki/Jetronic

   Inlet manifold vacuum is measured using a pressure sensor located in, or connected to the intake manifold, in order to calculate the duration of fuel injection pulses. Originally, this system was called Jetronic, but the name D-Jetronic was later created as a retronym to distinguish it from subsequent Jetronic iterations.

5. Fuel injection - Wikipedia

   en.wikipedia.org/wiki/Fuel_injection

   Fuel injection is the introduction of ... Manifold injection systems are common in petrol ... pump of the type that is governed by the vacuum behind an ...

6. MAP sensor - Wikipedia

   en.wikipedia.org/wiki/MAP_sensor

   The way they do this is during a deceleration of the vehicle when there is low absolute pressure in the intake manifold (i.e., a high vacuum present in the intake manifold relative to the outside air) the powertrain control module (PCM) will open the EGR valve and then monitor the MAP sensor's values. If the EGR is functioning properly, the ...

7. Bendix Electrojector - Wikipedia

   en.wikipedia.org/wiki/Bendix_Electrojector

   The Electrojector is an electronically controlled multi-point injection system that has an analogue engine control unit, the so-called "modulator" that uses the intake manifold vacuum and the engine speed for metering the right amount of fuel. The fuel is injected intermittently, and with a constant pressure of 1.4 kp/cm 2 (20 psi; 137 kPa ...

8. Naturally aspirated engine - Wikipedia

   en.wikipedia.org/wiki/Naturally_aspirated_engine

   In a naturally aspirated engine, air for combustion (Diesel cycle in a diesel engine or specific types of Otto cycle in petrol engines, namely petrol direct injection) or an air/fuel mixture (traditional Otto cycle petrol engines), is drawn into the engine's cylinders by atmospheric pressure acting against a partial vacuum that occurs as the piston travels downwards toward bottom dead centre ...

9. Rochester Ramjet - Wikipedia

   en.wikipedia.org/wiki/Rochester_Ramjet

   The Ramjet is a continuous-flow port-injection system. Unlike later fuel injection systems that used electronics, this one is based on purely mechanical principles. The two main sub-assemblies of the system are the air meter and the fuel meter. The air meter measures airflow into the engine and manages thermostatic warmup enrichment, fuel ...