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Several significant changes were made in 1987, which included: an improved cylinder head, intake manifold, and throttle-body fuel injection module; a more-modern serpentine belt with an automatic spring-loaded tensioner for the accessories; and a Distributorless Ignition System (DIS). This revision to the engine increased power to 98 hp (73 kW).
Typically, a group consists of two fuel injectors. In an engine with two groups of fuel injectors, there is an injection every half crankshaft rotation, so that at least in some areas of the engine map no fuel is injected against a closed intake valve. This is an improvement over a simultaneously injecting system.
In 1974, Bosch introduced the K-Jetronic system, which used a continuous flow of fuel from the injectors (rather than the pulsed flow of the D-Jetronic system). K-Jetronic was a mechanical injection system, using a plunger actuated by the intake manifold pressure which then controlled the fuel flow to the injectors. [55]
Mechanical fuel injection, 'K' stands for German: "Kontinuierlich", meaning continuous.Commonly called 'Continuous Injection System (CIS) in the USA. K-Jetronic is different from pulsed injection systems in that the fuel flows continuously from all injectors, while the fuel pump pressurises the fuel up to approximately 5 bar (73.5 psi).
Starting in 1986, a throttle-body fuel injection system took advantage of the engine's breathing capacity. [4] The redesign included a revised computerized spark curve and 10% higher cranking speeds due to a new lighter weight - going from 17 to 8 lb (8 to 4 kg)), low-current draw permanent-magnet starters with compact planetary reduction gears.
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It can control the ignition and fuel injection. It does not contain built-in power drivers for ignition coils, fuel injectors and idling air control (IAC) valve. External drivers must be used. SECU-3L. [3] It was designed for ignition control only and it can be considered as a light version of the SECU-3T unit.
A process flow diagram (PFD) is a diagram commonly used in chemical and process engineering to indicate the general flow of plant processes and equipment. The PFD displays the relationship between major equipment of a plant facility and does not show minor details such as piping details and designations.