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Engine for an air hybrid vehicle

A technology of hybrid electric vehicles and engines, which is applied in the field of automobiles and can solve problems such as increased manufacturing costs and complex structures

Inactive Publication Date: 2011-02-09
BRUNEL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above patents are believed to constitute the closest prior art to the present invention, requiring two types of intake ports and (more importantly) variable valve actuation systems which complicate construction and increase manufacturing costs

Method used

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  • Engine for an air hybrid vehicle
  • Engine for an air hybrid vehicle

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Experimental program
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Embodiment Construction

[0020] Detailed Description of Preferred Embodiments

[0021] In the drawings, the diagrams shown within boxes drawn in dashed lines show cross-sectional views of an engine cylinder through the four strokes of an engine braking cycle. These strokes are marked with Roman numerals and denoted as Intake Stroke I, Compression Stroke II, Power Stroke III and Exhaust Stroke IV.

[0022] The cylinder shown in all figures has a combustion chamber 10 and a piston 20, connected in a conventional manner to a crankshaft (not shown). Air is drawn into the combustion chambers through intake valves 12 and 14 and exhausted through exhaust valves 16 . The top four figures within the box show the two intake valves 12 and 14 , while the bottom figure shows the intake valve 14 and the exhaust valve 16 during the exhaust stroke IV.

[0023] The intake port leading to the intake valve 12 contains a check valve 32 and a small secondary combustion chamber 30 defined between the intake valve 12 an...

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PUM

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Abstract

An engine for use in an air hybrid vehicle comprises at least one cylinder having a piston (20) defining a variable volume working chamber (10) and intake (12, 14) and exhaust (16) valves controlling the flow of air into and out of the working chamber. The cylinder is operable in any one of at least two modes, namely a first mode in which power is generated by burning fuel in the working chamber (10), and a second mode in which the cylinder acts to compress air drawn into the working chamber (10) and to store the compressed air in an air tank (36). The engine further comprises a non-return valve (32) in an intake port leading to an intake valve (12) of the cylinder so as to define an auxiliary chamber (30) in the intake port between the intake valve (12) and the non-return valve (32). A passage (24) connecting the auxiliary chamber (30) to the air tank (36) contains a valve (34) for controlling the flow of compressed air between the auxiliary chamber (30) and the air tank (36). In the invention, a stop (40) is provided which is operative to prevent full closure of the intake valve (12) when the engine is operating in the second mode, whereby the air compressed in the working chamber by the movement of the piston is admitted through the open intake valve (12) into the auxiliary chamber (30).

Description

technical field [0001] The present invention relates to an internal combustion engine for an air-hybrid vehicle in which regenerative braking is obtained by using energy from compressed air, and to a vehicle comprising such an engine. Background technique [0002] It is well known that regenerative hybrid vehicles can achieve significant reductions in fuel consumption (and thus CO2 emissions) by recovering some of the vehicle's kinetic energy during deceleration or braking and converting the recovered kinetic energy into another form of energy, the energy can be stored for future use. An example is in electric hybrid vehicles, where braking energy is converted to electricity and stored in the battery. Another example is in an inertial hybrid vehicle, where braking energy is converted to inertial energy and stored in a spinning flywheel. Yet another example is in a pneumatic hybrid vehicle, where braking energy is converted to pneumatic energy and stored in a compressed air...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D13/04F02B29/02F02N9/04F02B21/00
CPCF02D41/0007F01L13/06Y02T10/146F02D41/0005Y02T10/42F02D2041/001F02D13/04F02B29/02F02D41/0002F02B21/00F02D13/0226Y02T10/12Y02T10/40B60K6/12F02D13/06F02D17/023
Inventor 马载熙赵华
Owner BRUNEL UNIVERSITY