Gasoline and diesel general purpose internal-combustion engine

Abstract

The present invention discloses a universal gasoline-diesel internal combustion engine. A combustion chamber (16) is a high compression ratio combustion chamber. An explosion preventing and energy storing device which is communicated with the high compression ratio combustion chamber (16) is arranged on a cylinder cover (17). The energy q1of Pbz max larger than the allowed combustion pressure P1z during the combustion process is stored by the explosion preventing and energy storing device of the present invention to eliminate peak value and avoid detonation; when a piston descends, the stored energy q1 is transferred into q2 to be discharged under a controlled condition to form an isobaric combustion area between P1z and P2z, so as to obtain a full indicating diagram. The universal gasoline-diesel internal combustion engine is not provided with an electronic ignition system, compression combustion ignition is carried out by the high temperature produced by high compression ratio. The universal gasoline-diesel internal combustion engine has the advantages of good dynamic property, economical efficiency and discharging performance, and particularly advantageous under cold start, idle speed, warming up and low load and low temperature. When the universal gasoline-diesel internal combustion engine is applied to a diesel engine, the universal gasoline-diesel internal combustion engine also can improve the discharge and eliminate the influence caused by rough combustion, facilitate the diesel engine to develop towards light weight and high speed and improve the performance of the diesel engine completely.

Description

technical field [0001] The invention relates to an internal combustion engine, in particular to a general-purpose internal combustion engine combining gasoline and diesel. Background technique [0002] Known traditional internal combustion engine working cycle mainly contains following three kinds, namely: [0003] Constant volume (Otto) duty cycle for ignition gasoline engines. When the initial temperature, compression ratio, and heat supply are the same, the thermal efficiency is the highest. Such as figure 1 As shown, 1-2 is adiabatic compression, 2-3 is constant volume heating Q 1 , 3-4 is adiabatic expansion, 4-1 is constant volume exothermic Q 2 . [0004] The constant pressure (Diesel) cycle used for gas turbines and early diesel engines has the highest thermal efficiency when the initial temperature, maximum combustion pressure, and heat supply are the same. Such as figure 2 Shown is 1-2 adiabatic compression, 2-3 is constant pressure heating Q 1 , 3-4 is ad...

AI Technical Summary

Problems solved by technology

Regrettably, practice over the years has shown that some cannot be realized structurally, and some cannot reach the expected indicators. So far, little progress has been made, and spark plug ignition is still inseparable. The gasoline engine with simple compression ignition ignition has not yet been seen.

[0008] In 2007, a CAI (compression) controllable self-ignition engine proposed by the UAES Technology Center uses exhaust gas to increase the compression temperature and dilute the combustible mixture to achieve compression ignition and multi-point combustion. The compression ratio reaches 12.5 and the compression ratio is not high. , still in the research stage

[0009] The constant-capacity heating gasoline engine in which the fuel is quickly supplied to the combustion chamber adopts a high compression ratio, although the power and economy are good, but it will inevitably lead to an excessively high combustion pressure P bz max and knock

like Figure 4 As shown, if it is not controlled, it will damage the engine's smooth operation, reliability, power and economy

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