Engine Modeling and Control: Modeling and Electronic by Rolf Isermann

By Rolf Isermann

The expanding calls for for inner combustion engines in regards to gasoline intake, emissions and driveability bring about extra actuators, sensors and complicated keep watch over services. a scientific implementation of the digital keep watch over platforms calls for mathematical versions from uncomplicated layout via simulation to calibration.

The publication treats physically-based in addition to versions dependent experimentally on try out benches for fuel (spark ignition) and diesel (compression ignition) engines and makes use of them for the layout of different keep watch over services. the most issues are:

- improvement steps for engine control

- desk bound and dynamic experimental modeling

- actual types of consumption, combustion, mechanical method, turbocharger, exhaust, cooling, lubrication, force train

- Engine regulate buildings, undefined, software program, actuators, sensors, gasoline provide, injection approach, camshaft

- Engine regulate equipment, static and dynamic feedforward and suggestions regulate, calibration and optimization, HiL, RCP, keep watch over software program development

- keep watch over of gas engines, keep watch over of air/fuel, ignition, knock, idle, coolant, adaptive keep watch over functions

- regulate of diesel engines, combustion types, ventilation and exhaust recirculation keep an eye on, combustion-pressure-based regulate (HCCI), optimization of feedforward and suggestions regulate, smoke predicament and emission control

This publication is an creation to digital engine administration with many sensible examples, measurements and examine effects. it truly is geared toward complicated scholars of electric, mechanical, mechatronic and regulate engineering and at working towards engineers within the box of combustion engine and automobile engineering.

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Additional resources for Engine Modeling and Control: Modeling and Electronic Management of Internal Combustion Engines

Sample text

The relative high compression ratio in the cylinders together with the low charging losses because of an inactive throttle valve in the intake and therefore good air supply lead to a higher efficiency compared to gasoline engines, especially at part load. However, the higher the combustion temperature and therefore the higher the thermodynamic efficiency the more NOx gases are produced because of the oxidation of nitrogen gas contained in the air. In order to lower the combustion temperature and the NOx concentration, the exhaust gases can be recirculated to the intake on cost of the fuel efficiency.

3 Alternative drives A further step of the electrification of vehicles is the development of hybrid drives. One reason for this combination of combustion engines and electrical drives is a further saving of fuel consumption and emissions through the operation of the combustion engines in the ranges of better specific fuel consumption, regenerative braking and electrical driving. Micro hybrids have typically a starter/generator with one clutch and start-stop control. Mild and full hybrids in parallel configuration are characterized through a stronger starter/generator or a generator/motor with two clutches.

The next sections give, as a first overview, some details of basic control functions for gasoline and diesel engines. 000 2 50 0 1995 1 [MIPS] 2000 2005 [Mbyte] 2010 labels performance storage Fig. 1. Development of ECU characteristics for engine control, ETAS (2010). 4 illustrates the main components of a direct injection gasoline engine with its actuators and sensors. To generate a certain torque at the crankshaft the gasoline engines require a very specific air-fuel mixture. 02. Therefore the air is usually throttled for part-load by a throttle valve so that the cylinders suck the air from the manifold with sub-atmospheric pressure.

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