CN205206952U

CN205206952U - Energy utilization's device in improvement internal -combustion engine tail gas

Info

Publication number: CN205206952U
Application number: CN201520447396.4U
Authority: CN
Inventors: 张建民
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-06-26
Filing date: 2015-06-26
Publication date: 2016-05-04
Anticipated expiration: 2025-06-26

Abstract

The utility model provides an energy utilization's device in improvement internal -combustion engine tail gas. This device divide into the blast pipe of internal -combustion engine the inflation blast pipe and releases the blast pipe, to the segmentation of inflation blast pipe to adopt in the inflation blast pipe in good time tobacco expansion process again, under the prerequisite that does not increase the exhaust tesistance, turn into the expansion energy to the heat energy in the tail gas, its with tail gas in promote the acting of tail air turbine after the stack of original expansion energy. This device can utilize the turbine to obtain more available mechanical energy from the tail gas of internal -combustion engine. The main applied direction of this technique is: tail air turbine promotes the generator through the reduction gear, and for the storage battery charging of oil -electricity hybrid vehicle car, messenger oil -electricity hybrid vehicle car does not charge realize traveling of the additional energy consumption of nothing when adopting internal -combustion engine drive mode in.

Description

Improve the device of capacity usage ratio in exhaust gases of internal combustion engines

Technical field

The utility model relates to a kind of device improving the efficiency of internal combustion engine, and especially a kind of device improving capacity usage ratio in exhaust gases of internal combustion engines, belongs to technical field of internal combustion engines.

Background technique

Exhaust loss is one of large percentage in the every loss of internal-combustion engine, it is almost suitable with useful work, if can be useful work the Conversion of Energy in waste gas, the efficiency of internal-combustion engine just can be made to be significantly improved, and the existing exhaust gas turbocharge scheme extensively adopted is exactly the exploration and practice carried out on the one hand at this.Along with the application of exhaust gas turbocharge scheme, the power per liter of internal-combustion engine is significantly improved, but this scheme can not improve the thermal efficiency of internal-combustion engine, show that the fuel consumption rate index of boosting internal combustion engine does not significantly reduce, this is mainly because there is following defect in exhaust gas turbocharge scheme: (1) promotes waste gas exhaust-gas turbocharger and adds exhaust resistance, and the release lost work of exhaust is raised; (2) raising of suction pressure increases the pressure in compression stroke in cylinder, and the lost work of compression is raised; (3) because the rising of suction pressure can make the pressure and temperature in compression and expansion stroke in cylinder significantly raise, in order to avoid pressure and temperature is too high and damage machine, must be limited the amplitude of supercharging, this is not fully utilized with regard to making the energy in waste gas.

The patent No. is 201320008898.8, the utility model patent that patent name is the air interchanger of internal combustion engine thermal efficiency " improve " discloses and a kind ofly exhaust along separate routes can be adopted to reduce exhaust resistance, adopts series boosting the expansion work in waste gas to be converted into greatest extent useful work, adopts the compression initial stage suitably to discharge the method for the pressure of cylinder in inner pressure of air cylinder limit compression and expansion stroke, energy in waste gas is transformed into useful work to greatest extent, significantly improves internal combustion engine thermal efficiency.Though this method has been proved to be feasible and effectively, but there are two major defects in it, (1) because it will to discharge the pressure in cylinder latter stage in aspirating stroke, cause the actual air quantity participating in burning in cylinder to be difficult to measure and control, cause fuel air ratio to be also difficult to accurate control; (2) because having in the energy that comprises of tail gas is heat energy greatly, instead of expansion energy, above-mentioned art solutions can not utilize the heat energy in tail gas.Therefore, want the energy in tail gas is utilized more fully, must be further improved technique scheme.

Summary of the invention

The technical problems to be solved in the utility model is: provide one neither to increase exhaust resistance, can be expansion energy the thermal energy in tail gas again, it is made to superpose with expansion energy original in tail gas, and then promoting the acting of tail gas turbo machine, this device can utilize turbo machine from tail gas, obtain more how available mechanical work.

For solving the problems of the technologies described above, technical solution adopted in the utility model is: a kind of device improving capacity usage ratio in exhaust gases of internal combustion engines, comprises cylinder head, expanded exhaust pipe and release outlet pipe, solenoid valve, compressed air hose, control unit of engine, gas holder, air pump, suction tude, turbo machine and turbo machine land.Described expanded exhaust pipe is according to the exhaust angular interval between each cylinder, be divided at least two sections, each section of expanded exhaust pipe is converged in tail gas turbo machine, described each section of expanded exhaust pipe is connected with gas holder through solenoid valve by compressed air hose respectively, gas holder is connected with air pump, the inlet end of air pump is connected with the suction tude of internal-combustion engine, and the outlet side of expanded exhaust pipe is communicated with silencing apparatus after tail gas turbo machine, and the outlet side releasing outlet pipe is communicated with silencing apparatus.

Correspond to each cylinder in described cylinder head be provided with expanded exhaust valve and release that outlet valve is corresponding, mutual separated air outlet flue.

Described expanded exhaust pipe and release outlet pipe are positioned at the same side of internal-combustion engine.

Crank angle range between the opening angle of described expanded exhaust valve and the closedown angle releasing outlet valve covers whole exhaust stroke.Adopt along separate routes after exhaust technique, two-way exhaust completes expanded exhaust process respectively and releases exhaust process, and opening angle and the closedown angle sum releasing outlet valve of expanded exhaust valve equal the duration angle that existing exhaust valve for internal combustion engine opens can complete exhaust stroke.

Described solenoid valve provides control electric energy by control unit of engine (ECU).

It is as follows that the utility model arranges the reason expanding and release two exhaust branch roads: the tail gas of two exhaust phase discharges is taken their own roads, do not interfere with each other, the expansion work of carrying in the tail gas of discharging with expanded exhaust branch road promotes tail gas turbo machine, and the energy in tail gas is utilized; Walk around turbo machine from the waste gas releasing the discharge of exhaust branch road, directly enter air through silencing apparatus, the exhaust resistance of release exhaust phase is reduced.This measure is the energy made full use of in waste gas, and does not increase exhaust resistance and create condition.

The utility model adopts the reason of expanded exhaust pipe segmentation as follows: expanded exhaust pipe is according to the exhaust angular interval between each cylinder, be divided at least two sections, exhaust interval angles in each section of expanded exhaust pipe should ensure between its outlet valve connected without folded angle of release, each section of expanded exhaust pipe is converged at the inlet end of tail gas turbo machine, like this, making full use of in tail gas while expansion work as far as possible, the adverse effect of pressure surge combustion motor running in outlet pipe can also reduced.

The utility model adopts the reason of reflation in good time in expanded exhaust pipe as follows: in order to be useful work the converting heat in tail gas, in good time to injecting compressed air in each section of expanded exhaust pipe, pressurized air is after touching the high-temperature tail gas in outlet pipe, volume can expand, realizing the thermal energy in tail gas is expansion energy, this demi-inflation can be superimposed with original expansion energy in tail gas, and just can obtain more expansion energy promotes tail gas turbo machine.

Energy in waste gas can be changed into available mechanical energy through tail gas turbo machine by the utility model to greatest extent, because the energy comprised in tail gas is almost suitable with the useful work of internal-combustion engine, so after enforcement the present invention, the mechanical energy that can obtain from tail gas turbine output shaft is also very considerable.According to existing technical specifications, after enforcement the utility model, the main application direction of mechanical energy obtained from tail gas turbine output shaft is: utilize tail gas turbo machine through retarder pushing generator, for the charge in batteries of oil-electric vehicle, making oil-electric vehicle when adopting internal combustion engine drive pattern, can realize charging in the traveling without additional energy consumption.The utilization ratio of motor fuel can be improved in this two methods direction, reaches the object of energy-saving and emission-reduction.

Accompanying drawing explanation

Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.

Fig. 1 is formation schematic diagram of the present invention;

Fig. 2 is expanded exhaust valve cam structural representation;

Fig. 3 releases exhaust-valve cam structural representation;

Fig. 4 is the layout schematic diagram of each air valve and air inlet and exhaust piper on cylinder head;

Fig. 5 is the layout schematic diagram of each outlet pipe in outlet pipe side on cylinder head

In Fig. 1,1, silencing apparatus, 2, release outlet pipe, 3, turbo machine, 4, land, 5, one section of expanded exhaust pipe, 6, two sections of expanded exhaust pipe, 7, cylinder head, 8, expanded exhaust valve, 9, suction valve, 10, outlet valve is released, 11, solenoid valve, 12, compressed air hose, 13, control unit of engine (ECU), 14 gas holder, 15, air pump, 16 suction tude 17, air-strainer;

The point that in Fig. 2, capitalization English letter marks is corresponding respectively: A, lower dead center, B, top dead center, C, expanded exhaust valve opening point, and F, expanded exhaust valve reach maximum point, and G, expanded exhaust valve close close point, and D, existing exhaust valve for internal combustion engine close close point;

The point that in Fig. 3, capitalization English letter marks is corresponding respectively: A, lower dead center, B, top dead center, H, release exhaust valve opening point, I, release exhaust valve open are to maximum point, exhaust valve opening point released by C, existing internal-combustion engine, D, release exhaust valve close close point (closing close point with existing exhaust valve for internal combustion engine to overlap).

In Fig. 4, Fig. 5, the part of each digitized representation is consistent with Fig. 1.

Embodiment

1) exhaust along separate routes: cover in existing Dual Over Head Camshaft internal combustion (IC) engine cylinder and make mutually isolated air outlet flue corresponding to each cylinder, and corresponding amendment is made to exhaust cam, according to expanded exhaust stage in exhaust stroke and release exhaust phase difference in time, the approach of exhaust is divided into expanded exhaust branch road and releases exhaust branch road, the driving mechanism of air valve is utilized to control the outlet valve of these two exhaust branch roads respectively, expanded exhaust valve was opened in the expanded exhaust stage, closes at release exhaust phase; Release outlet valve to open at release exhaust phase, close at the end of exhaust.

2) expanded exhaust pipe segmentation: the connection of the Placement of expanded exhaust pipe and tail gas turbo machine and the pressure swing type exhaust-gas turbocharging system outlet pipe of existing internal-combustion engine is similar to, expanded exhaust pipe is divided at least two sections, make without folded angle of release between the outlet valve in each section of expanded exhaust pipe, each section of expanded exhaust pipe is connected through the suction port of land with tail gas turbo machine.

3) in good time reflation: establish a solenoid valve to be connected with air pump and gas holder in each section of expanded exhaust pipe respectively, the control electric energy of solenoid valve is provided by control unit of engine, when expanded exhaust valve corresponding in a certain section of expanded exhaust pipe cuts out completely, open solenoid valve in good time, appropriate injecting compressed air in the expanded exhaust pipe of correspondence, after pressurized air absorbs the heat in tail gas, volume will expand and produce expansion energy, be expansion energy the thermal energy in tail gas, so just can obtain more expansion energy to promote tail gas turbo machine.

Claims

1. one kind is improved the device of capacity usage ratio in exhaust gases of internal combustion engines, comprise cylinder head (7), one section of expanded exhaust pipe (5), two sections of expanded exhaust pipe (6), release outlet pipe (2), solenoid valve (11), compressed air hose (12), control unit of engine (13), gas holder (14), air pump (15), suction tude (16), turbo machine (3) and turbo machine land (4), described expanded exhaust pipe is according to the exhaust angular interval between each cylinder, be divided at least two sections, each section of expanded exhaust pipe is converged in tail gas turbo machine (3), described each section of expanded exhaust pipe is connected with gas holder (14) through solenoid valve (11) by compressed air hose (12) respectively, gas holder (14) is connected with air pump (15), the inlet end of air pump (15) is connected with the suction tude (16) of internal-combustion engine, the outlet side of expanded exhaust pipe is communicated with silencing apparatus (1) after tail gas turbo machine, the outlet side releasing outlet pipe (2) is communicated with silencing apparatus (1).

2. the device of capacity usage ratio in raising exhaust gases of internal combustion engines according to claim 1, it is characterized in that, correspond to each cylinder in described cylinder head (7) and be provided with expanded exhaust valve and release that outlet valve is corresponding, mutual separated air outlet flue.

3. the device of capacity usage ratio in raising exhaust gases of internal combustion engines according to claim 1, it is characterized in that, described one section of expanded exhaust pipe (5), two sections of expanded exhaust pipe (6) and release outlet pipe (2) are positioned at the same side of internal-combustion engine.

4. the device of capacity usage ratio in raising exhaust gases of internal combustion engines according to claim 1, it is characterized in that, the crank angle range between the opening angle of described expanded exhaust valve (8) and the closedown angle releasing outlet valve (10) covers whole exhaust stroke.

5. the device of capacity usage ratio in raising exhaust gases of internal combustion engines according to claim 1, it is characterized in that, described solenoid valve provides control electric energy by control unit of engine (13).