Engine

A technology of engine and engine management, applied in the direction of engine control, machine/engine, mechanical equipment, etc., can solve problems such as engine damage, insufficient combustion gas temperature or engine knocking

Inactive Publication Date: 2006-05-03
MAHLE POWERTRAIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Outside of these conditions, the occurrence and increase of incomplete combustion gas temperatures or engine knock with unwanted engine noise and eventual engine damage becomes unacceptable and requires a transition to spark ignition operation

Method used

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Embodiment Construction

[0038] now refer to figure 1 , figure 1 Shown in is a part of an internal combustion engine embodying the invention. The invention comprises an engine management system with an electronic control unit (ECU) 11 and one or more cylinders, only one cylinder being shown with reference numeral 12 for clarity of presentation. In a conventional manner, a piston 13 is movable inside a cylinder 12 and drives a crankshaft via a con rod 14 . Air is supplied to cylinders 12 through an intake throttle 15 and a manifold, shown generally at 16 . Depending on whether indirect or direct injection is used, fuel may be introduced into intake manifold 16 or into the air within cylinder 12 . Preferably, the ECU 11 is operable to control fuel supply to provide an air / fuel ratio λ required for the engine operating state. Exhaust gases from the combustion are released from the cylinders through outlet 17 . A fresh charge, i.e. air or a fuel / air mixture, enters the cylinder 12 through an intake p...

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Abstract

An internal combustion engine comprising: an engine management unit, a combustion chamber having an intake port and an exhaust port, a fuel supply mechanism for supplying gasoline or gasoline-like fuel to the engine, a valve train, and an external recirculation system, the valve train Allowing the introduction of air into the intake port of the combustion chamber and the release of exhaust gas from the exhaust port of the combustion chamber, exhaust gas from the exhaust port can be passed to the intake port via this external recirculation system, wherein the engine management the unit is operable to control the valve train to retain and / or re-breath exhaust gas inside the combustion chamber to cause the engine to operate in a controlled auto-ignition combustion mode, and to control the external circulation system to supply exhaust gas to the intake port in a controlled auto-ignition combustion mode, causing spontaneous combustion to occur in the combustion chamber.

Description

technical field [0001] The present invention relates to the control of internal combustion engines, especially combustion engines operating in a controlled auto-ignition mode. Background technique [0002] Traditionally, internal combustion engines use "spark ignition" ("SI") to ignite the fuel / air mixture in the engine cylinders using an electric spark. As Allen J. and Law D. in Society of Automotive Engineers (SAE) Paper No. 2002-01-0422 "Controlled Auto-Ignition Driven by Regulating Valve; Speed ​​Load Diagram and Critical Range of Operation (Variable Valve actuatedcontrolled Auto-Ignition; Another known mode of operation is known as Controlled Auto-Ignition ("CAI"), as described in Speed ​​Load Maps and Strategic Regimes of Operation). In the CAI mode, the hot exhaust gases from combustion are either retained in the engine cylinders or re-breathed from the exhaust manifold, so-called exhaust gas recirculation ("EGR"), for example by controlling the cylinder valves so th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D43/00
Inventor A·凯恩斯H·布拉克希尔
Owner MAHLE POWERTRAIN
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