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Internal combustion engine and vehicle equipped with such engine

A technology for internal combustion engines and compressors, applied to internal combustion piston engines, vehicle components, combustion engines, etc., can solve the problems of unoptimized container positions, complex heat transfer fluid circuits, and large volumes

Inactive Publication Date: 2012-11-28
PEZHO SITROEN AUTOMOBILS SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Problems with turbo compressor response time when load changes: Intake pressure increase lags relative to load increase command
Further, the heat transfer fluid circuit is relatively complex and bulky
In addition, in the exhaust line, the position of the container is not optimized, and this internal combustion engine emits a large amount of hydrocarbons

Method used

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  • Internal combustion engine and vehicle equipped with such engine
  • Internal combustion engine and vehicle equipped with such engine
  • Internal combustion engine and vehicle equipped with such engine

Examples

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Embodiment Construction

[0028] The internal combustion engine of the present invention includes a compressor and a Rankine cycle circuit having an evaporator in thermal contact with the exhaust gas line. The output shaft of the internal combustion engine is selectively connected or disconnected to the input shaft of the compressor. The Rankine cycle loop has an expansion device driven by evaporator exhaust gas. The expansion device is selectively connectable or disconnectable from the compressor input shaft.

[0029] In the practice of the present invention, the energy efficiency of the internal combustion engine can be increased by reducing the load on the output shaft. Further, the present invention can reduce the number of mechanical components by reducing the number of clutches required and correspondingly reducing the number of clutch control components.

[0030] figure 1 A first embodiment of the internal combustion engine 1 according to the invention is explained more precisely. The intern...

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Abstract

The invention relates to an internal combustion engine (1) that includes an inlet circuit (3) for oxidant air, an exhaust circuit (6), a compressor (4) having an input shaft (41), capable of increasing the air pressure in the inlet circuit when the input shaft thereof is rotated, an engine output shaft (21), a means for selective coupling (42) between the engine output shaft and the compressor input shaft, a Rankine cycle circuit (7) with an evaporator (71) in thermal contact with the exhaust circuit and provided with an expansion member (72) driven by the gas from the evaporator, characterised in that it further comprises a means for selective coupling (44) between the expansion member (72) and the input shaft (41) of the compressor.

Description

technical field [0001] This application claims priority from French application 0850307 filed on January 18, 2008, the content of which (text, drawings, claims) is incorporated in the present application. [0002] The present invention relates to internal combustion engines, and in particular to energy efficiency optimization of vehicle internal combustion engines. Background technique [0003] In order to limit the consumption of hydrocarbon fuels in vehicles, many researches are devoted to improving the energy efficiency of vehicles. In order to increase the energy efficiency of internal combustion engines, the most known technique is to apply supercharging in the intake line in order to increase the gas volume in the combustion chamber. The first supercharging concept incorporates a displacement compressor in the intake line, which is driven by the crank of the internal combustion engine by means of a drive belt. When the internal combustion engine is running at low spe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01N5/02F02B33/34F02B39/06F02B39/08F02B39/12B60H1/20F02G5/02F02M25/07
CPCF02B39/085F02B33/34F01N5/02B60H1/20F01N3/08F02B39/12Y02T10/121F02B39/06F02M25/0709F02M25/03Y02T10/16F01N3/021F02M26/06Y02T10/12
Inventor A·勒利埃夫尔
Owner PEZHO SITROEN AUTOMOBILS SA