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Engine control unit

About: Engine control unit is a research topic. Over the lifetime, 8640 publications have been published within this topic receiving 87606 citations. The topic is also known as: ECU.


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Patent
18 Aug 1994
TL;DR: In this article, a method for comprehensive integrated control of a compression-ignition internal combustion engine having integral fuel pump-injectors utilizing an electronic control unit (20) is disclosed.
Abstract: A method for comprehensive integrated control of a compression-ignition internal combustion engine having integral fuel pump-injectors utilizing an electronic control unit (20) is disclosed. The control strategy integrates various functions of engine control including fuel delivery (34), cooling fan control (38), engine speed governing and overspeed protection, engine braking, torque control, and vehicle speed diagnostics and control. Cooling fan control (38) is integrated with vehicle speed diagnostics and control as well as fuel delivery (34) to provide an integrated cruise control function which incorporates engine braking. The method also includes improved control over the various engine speed governors while improving idle quality by balancing the power delivered by each of the engine cylinders when at idle. The integrated torque control employs functions to reduce NOx emissions and noise utilizing adaptive fuel delivery timing and a split injection strategy.

302 citations

Journal ArticleDOI
TL;DR: In this article, two diesel engine models, a mean torque production model and a cylinder-by-cylinder model, are summarized for use in the formulation of control and state observation algorithms.
Abstract: Engine models that are used for nonlinear diesel engine control, state estimation, and model-based diagnostics are presented in this paper. By collecting, modifying, and adding to current available engine modeling techniques, two diesel engine models, a mean torque production model and a cylinder-by-cylinder model, are summarized for use in the formulation of control and state observation algorithms. In the cylinder-by-cylinder model, a time-varying crankshaft inertia model is added to a cylinder pressure generator to simulate engine speed variations due to discrete combustion events. Fuel injection timing and duration are control inputs while varying engine speed, cylinder pressure, and indicated torque are outputs from simulation. These diesel engine models can be used as engine simulators and to design diesel engine controllers and observers.

278 citations

Patent
08 May 2001
TL;DR: In this article, a multi-mode internal combustion engine and method of operating the engine is provided which is capable of operating in a variety of modes based on engine operating conditions to enhance fuel efficiency and reduce emissions.
Abstract: A multi-mode internal combustion engine and method of operating the engine is provided which is capable of operating in a variety of modes based on engine operating conditions to enhance fuel efficiency and reduce emissions. The multi-mode engine include a fuel delivery system and control system for permitting the engine to operate in a diesel mode, a homogeneous charge dual fuel transition mode, a spark ignition or liquid spark ignition mode and/or a premixed charge compression ignition mode. The control system and method permits the engine operation to transfer between the various modes in an effective and efficient manner by controlling one or more fuel delivery devices or other engine components so as to move along a continuous transfer path while maintaining engine torque at a substantially constant level.

275 citations

Patent
14 Aug 2000
TL;DR: In this article, an engine automatic start stop control apparatus is applied to the vehicle that performs idle stop control for reduction of discharge gas, and the apparatus controls the engine to restart based upon determination for restarting the engine under an engine stop mode.
Abstract: An engine automatic start stop control apparatus controls an engine of a vehicle to be automatically stopped or started in response to driving conditions of a vehicle. Particularly, the apparatus is applied to the vehicle that performs idle stop control for reduction of discharge gas. Herein, the apparatus controls the engine to restart based upon determination for restarting the engine under an engine stop mode. Namely, the apparatus controls the engine to restart if a driver depresses a clutch pedal or if a driver does not depress a brake pedal during an engine stall in which engine speed becomes zero. Thus, it is possible to restart the engine by prescribed operations even if the driver mistakenly recognizes that the engine is stopped by automatic stop control although the engine actually stalls due to an error operation of the driver so that the engine speed becomes zero. This improves drivability for the driver who handles the vehicle, particularly a hybrid vehicle which is capable of independently running by using an electric motor only.

256 citations

Patent
02 Jan 1996
TL;DR: In this paper, a system for controlling fuel metering in an internal combustion engine using a fluid dynamic model with the quantity of throttle-past air being determined therefrom is presented.
Abstract: A system for controlling fuel metering in an internal combustion engine using a fluid dynamic model with the quantity of throttle-past air being determined therefrom. Based on the observation that the difference between the steady-state engine operating condition and the transient engine operating condition can be described as the difference in the effective throttle opening areas, the quantity of fuel injection is determined from the product of the ratio between the area and its first-order lag value and the quantity of fuel injection under the steady-state engine operating condition obtained by mapped data retrieval and by subtracting the quantity of correction corresponding to the quantity of chamber-filling air. A pseudo-manifold pressure is estimated and is used for calculating the effective throttle opening area and its first lag value. The pseudo-manifold pressure is corrected by atmospheric pressure, engine coolant water temperature, etc., so as to enhance estimation accuracy.

248 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202310
202214
202142
2020120
2019138
2018162