Compression ignition internal-combustion engine system adopting carbinol-group fuel and operation method thereof

Abstract

The invention discloses a compression ignition internal-combustion engine system adopting carbinol-group fuel. The compression ignition internal-combustion engine system comprises a compression ignition type internal-combustion engine (N101), an air supply system, a fuel supply system and an ignition agent on-line preparation device (R101). The compression ignition type internal-combustion engine (N101) is provided with an air inlet (N101-1) and a fuel inlet (N101-2). The air supply system comprises an air supercharger (C101) and a mixer (M101), wherein the air supercharger (C101) and the mixer (M101) are in series connection, and an outlet of the mixer (M101) is connected to the air inlet (N101-1). The fuel supply system comprises a fuel tank (J101) and a fuel pump (P101), wherein the fuel tank (J101) and the fuel pump (P101) are in series connection, and the downstream of the fuel pump (P101) is connected to the fuel inlet (N101-2). The upstream of the ignition agent on-line preparation device (R101) is also connected to the fuel pump (P101), the downstream of the ignition agent on-line preparation device (R101) is connected to the mixer (M101), and the ignition agent on-line preparation device (R101) is internally provided with a catalyst bed layer. According to the compression ignition internal-combustion engine system, an ignition agent obtained through on-line preparation of the carbinol-group fuel is subjected to compression ignition in the compression ignition type internal-combustion engine, so that the carbinol-group fuel is ignited, and therefore under the circumstance that the structure of the existing compression ignition type internal-combustion engine does not need to be changed, diesel fuel can be completely replaced with the carbinol-group fuel.

Description

Technical field [0001] The invention belongs to the technical field of internal combustion engines, and specifically relates to a compression ignition type internal combustion engine system using methanol-based fuel and an operating method thereof. Background technique [0002] As a new type of alternative energy, methanol-based fuel has become an ideal product for replacing petroleum with its superior properties such as low price, high economy, strong power, clean and environmental protection. Since methanol is easily ignited, the implementation of methanol-based fuel substitution technology on spark-ignited gasoline engines is relatively mature in my country and has been promoted and applied in five provinces and cities (Shanxi, Shaanxi, Shanghai, Gansu, and Guizhou). In contrast, diesel is more scarce than gasoline in my country, and diesel engines produce higher thermal efficiency due to their high compression ratio. Therefore, the development of methanol-based fuel substitu...

AI Technical Summary

Problems solved by technology

The developed system can realize the on-line preparation and stable, continuous and accurate supply of gaseous igniter dimethyl ether (DMEV) to the internal combustion engine, which solves the problem that the methanol-based fuel in the compression ignition internal combustion engine cannot be directly compression-ignited due to its low cetane number. Technical problem to achieve complete substitution of methanol-based fuel for diesel fuel in compression ignition internal combustion engines without the use of high-pressure igniter tanks

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