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Internal combustion engine utilizing dual compression and dual expansion processes

A technology for internal combustion engines and compression cylinders, applied in combustion engines, mechanical equipment, machines/engines, etc., to solve problems such as limitations and device problems

Active Publication Date: 2010-12-01
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although relatively easy to maintain, these devices can be problematic and limited due to several aspects inherent in their design

Method used

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  • Internal combustion engine utilizing dual compression and dual expansion processes
  • Internal combustion engine utilizing dual compression and dual expansion processes
  • Internal combustion engine utilizing dual compression and dual expansion processes

Examples

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Embodiment Construction

[0047]In one embodiment, the present invention provides a four-cylinder internal combustion engine comprising a two-stroke compression cylinder, a two-stroke expansion cylinder, and a pair of four-stroke power cylinders. With reference to the accompanying drawings, the accompanying drawings are only provided as exemplary illustrations of the present invention rather than being interpreted as its definition, figure 1 A schematic diagram of engine 10 according to one embodiment is shown. exist figure 1 A compression cylinder 3 is shown in , which generally includes a bore and in one embodiment is equipped with a reciprocating piston operatively connected to a rotatable cylinder by means of a connecting rod (such an arrangement is known in the art). crankshaft. The compression cylinder 3 has a compressor inlet 5 at which air (in the case of a fuel-injected engine) or an air-fuel mixture (in the case of a carbureted engine) can be introduced at a first pressure p1, The first pr...

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Abstract

The invention relates to an internal combustion engine utilizing dual compression and dual expansion processes. Engines and processes for their operation include a compressor cylinder, at least one power cylinder, and an expander cylinder. The outlet of the compressor cylinder is fed to the inlet of a power cylinder, and the outlet of the power cylinder is fed to the expander cylinder. The compressor cylinder and the expander cylinder are operated in two-stroke fashion, and the power cylinder is operated in four-stroke fashion, all of which cylinders share a common crankshaft. Heat may be recuperated from the exhaust gas and directed to the inlet gas of the power cylinder, increasing overall efficiency.

Description

technical field [0001] The present invention relates generally to internal combustion engines, including spark-ignition internal combustion engines and compression-ignition internal combustion engines. More specifically, the present invention relates to internal combustion engines that employ a dual process to compress and expand an air-fuel mixture. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and may not constitute prior art. [0003] Modern internal combustion engines are generally of the spark-ignition and compression-ignition types. During operation, the efficiency of an internal combustion engine depends on many factors, including volumetric and thermodynamic efficiency. To enhance the former, designers have for decades equipped engines with forced induction devices, including turbochargers and superchargers, which are primarily add-ons to the basic engine design. While relativel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02B41/02F02M7/00
CPCF02B41/06
Inventor R·P·杜雷特V·戈帕拉克里什纳
Owner GM GLOBAL TECH OPERATIONS LLC
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