Common rail system, internal combustion engine, and device and method for controlling and/or regulating an internal combustion engine

Abstract

The invention relates to a common rail system (100) for an internal combustion engine (1), comprising: a rail (6) for fuel and an injector (8) that is fluidically connected via a high-pressure guide and used to inject the fuel into a working chamber of the internal combustion engine (1), the high-pressure guide comprising a high-pressure component with a single accumulator (7), and the high-pressure guide and / or the rail (6) comprising a pressure-measuring device (10, 20, 30). According to the invention, the pressure-measuring device is coupled to a local logic and storage unit (AE, ACR, AI) of a decentrally distributed local electronics system (12), which is designed to locally evaluate and store measurement data from the pressure-measurement device, more particularly injector data and / or rail data, and the pressure-measurement device is connected to the central electronics system (9) via the local logic and storage unit (AE, ACR, AI) by means of a bus, and the local logic and storage unit (AE, ACR, AI) is designed, in conjunction with the central electronics system (9), for controlling and / or regulating the common rail system (100) for the internal combustion engine (1).

Description

technical field [0001] The invention relates to a common rail system for an internal combustion engine according to the preamble of claim 1 . Injectors for injecting fuel into the working chamber of the internal combustion engine are connected to the rail via a high-pressure line for fuel, wherein the high-pressure line has a high-pressure component with a single accumulator with a pressure measuring device. Background technique [0002] With such a pressure measuring device, a pressure determination can be carried out in a particularly reliable manner, for example at a single accumulator in a common rail system. Such systems are described, for example, in the applicant's documents DE 10 2009 002 793 A1 or DE 10 2006 034 515 B3; here the advantages of a common rail system with a single accumulator come into play. [0003] In addition, other measuring devices can in principle also be coupled to the high-pressure component. Overall, the systems mentioned at the outset are us...

AI Technical Summary

Problems solved by technology

Inaccuracies in the regulation of the start and end of injection ultimately lead to inaccuracies regarding the amount of fuel supplied to the internal combustion engine

[0004] Despite accurate sensing techniques, the above schemes can lead to inaccuracies, for example due to injection characteristics that vary over the life of the injector

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