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Diesel engine and method of controlling the diesel engine

A diesel engine and engine technology, applied in engine control, engine incandescent ignition, engine ignition, etc., can solve problems such as low temperature and pressure, prolonged ignition delay, etc.

Inactive Publication Date: 2012-01-11
MAZDA MOTOR CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in an engine with a geometric compression ratio set at a low compression ratio such as 15:1 or lower, the temperature and pressure at the end of the compression stroke are lower, so that the ignition delay tends to be prolonged

Method used

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  • Diesel engine and method of controlling the diesel engine
  • Diesel engine and method of controlling the diesel engine
  • Diesel engine and method of controlling the diesel engine

Examples

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Embodiment Construction

[0037] The following reference drawings are described in detail according to the diesel engine of the embodiment of the present invention.It should be noted that the description of the following preferred embodiments is only an example. figure 1 and 2 Show the schematic structure of the engine (engine body) 1 of the embodiment.Engine 1 is a diesel engine that is installed to the vehicle and provides fuel with the main component of diesel fuel.The diesel engine includes a cylinder body 11 with multiple cylinder 11A (only one cylinder), the cylinder head 12 set on the cylinder body 11, and the oil bottom of the oil bottom of the cylinder body 11 and store lubricating oil in it and store lubricating oil.Shell 13.In the cylinder 11A of the engine 1, the piston 14 is installed in a reciprocating way, and part of the cavity of the shrinkage burning chamber 14A is formed on the top surface of each piston 14.Each piston 14 is connected to the crankshaft 15 by connecting rod 14B.

[0038] ...

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PUM

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Abstract

The invention relates to a diesel engine and a method of controlling the diesel engine. The diesel engine includes an engine body to be supplied with fuel containing diesel fuel as its main component, a geometric compression ratio being set to 15:1 or below, a fuel injection valve arranged in the engine body so as to be oriented toward a cylinder of the engine body and for directly injecting the fuel into the cylinder, and a control module for controlling a mode of injecting the fuel into the cylinder through the fuel injection valve. The control module performs a main injection where the fuel is injected to cause a main combustion mainly including a diffusion combustion and performs a plurality of pre-stage injections where the fuel is injected prior to the main injection to cause a pre-stage combustion prior to the main combustion. The control module controls the injection mode of the injections to adjust a heat release rate.

Description

Technical field [0001] The invention involves low compression ratio diesel engines with a lower geometric compression ratio. Background technique [0002] In the diesel engine installed in the vehicle, in order to reduce the NOX and black smoke contained in the exhaust, reduce noise or vibration, and improve fuel consumption and torque, in a cycle of the engine, perform multiple fuels in each cylinder in each cylinderinjection.For example, JP2009-293383A revealed a diesel engine with turbocharger, which executes five fuel injection: the main spray used to generate torque, and executes before the main injection., Phase the pre-inject (after injecting), which to suppress the ignition of the fuel that suppresses the fuel of the main spray and spray.After the injection, the fuel is introduced into the exhaust system to increase the post -to -post injecting system to improve the temperature of the catalyst. [0003] At the same time, in the diesel engine, after the fuel is sprayed, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D41/38
CPCF02D41/403F02D41/38F02D41/402Y02T10/44Y02T10/46F02P19/02F02D41/3035F02P5/153Y02T10/40
Inventor 志茂大辅金尚奎西本京太郎森永真一丸山庆士皆本洋铁野雅之名越匡宏
Owner MAZDA MOTOR CORP
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