Linear range-extending generator driven by pre-boost gas ventilation and exhaust free piston engine

Abstract

The invention provides a linear range-extending generator driven by a pre-boost gas ventilation and exhaust free piston engine, and relates to engines and generators. Two sets of cylinder bodies are connected to a generator body, and in-cylinder pistons form a group of free pistons through connecting rods; through a full-stroke boosting system, when the pistons reciprocate once, an exhaust valve and an intake valve of each cylinder are opened and closed once, and exhaust gas is flushed and exhausted by using fresh air and air intake is completed; then compression and acting are completed oncewhich mean in-cylinder exhaust gas recirculation is combined with the similar Miller cycle; and by means of a piezoelectric knock sensor and a controller, the highest compression ratio which is reached when the engine is suitable for the current condition is automatically selected, the piston part lubrication is the inner circulation lubrication taking an inertia density difference-driven self-circulating pump as the core, the generator is a cylindrical rare earth permanent magnet reciprocating linear generator comprising two tooth groove-shaped cylinder stators with stator coil windings and aphase difference of 90 degrees, the electric energy output of the generator is realized by a power controlled regulation output circuit, and the generator also serves as a starting motor.

Description

technical field [0001] The invention relates to an internal combustion engine and a range-extending generator driven by the same, which is a linear range-extending generator driven by a free-piston engine with pre-pressurization and exchanging exhaust. Background technique [0002] Due to its energy-saving and environmental protection characteristics, electric vehicles are the direction of automobile development. The current electric vehicles have problems such as the mileage of a single charge is not long enough or the battery itself is too heavy, the charging time is long, and the charging piles are not popular. Extended-range electric vehicles not only have the characteristics of high efficiency and low emissions of pure electric vehicles, but also can extend the driving range of pure electric vehicles. It is a better compromise solution to solve the current energy-saving and environmental protection problems. The existing four-stroke range extender has serious shortages ...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the serious shortage of power volume, liter power, and power proportion of existing four-stroke range extenders, and the existing two-stroke reciprocating free-piston engine range extenders have large pollution and waste of fuel. A linear range-extending generator driven by a gas free piston engine, which has high power capacity, high power lift, high power specific gravity, variable compression ratio and high efficiency, good emission, and relatively simple structure

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