Title:
GAS MIXING APPARATUS AND NATURAL GAS ENGINE
Document Type and Number:
WIPO Patent Application WO/2021/098023
Kind Code:
A1
Abstract:
A gas mixing apparatus and a natural gas engine. The gas mixing apparatus comprises a housing (1), a first mixing core (2), a first measurement component (3), a second mixing core (6), and a second measurement component (4); an air inlet and a natural gas inlet (11) are separately communicated with the first mixing core (2) to form a mixed gas in the first mixing core (2); the first measurement component (3) is connected to the first mixing core (2); the second mixing core (6) is connected to the interior of the housing (1); an EGR exhaust gas inlet (12) and the first mixing core (2) are separately communicated with the second mixing core (6); the second measurement component (4) is connected to the EGR exhaust gas inlet (12). By means of the first measurement component (3) and the second measurement component (4), measurement data is separately provided for obtaining the flow rates of air, gas, and EGR exhaust gas, and compared with a speed-density method and a throttle model, a result is more prone to be accurate, and the present invention is convenient to control an air-fuel ratio, thereby improving the conversion efficiency of a three-way catalytic device.
Inventors:
LIU ZHEN (CN)
Application Number:
PCT/CN2019/130586
Publication Date:
May 27, 2021
Filing Date:
December 31, 2019
Export Citation:
Assignee:
WEICHAI POWER CO LTD (CN)
International Classes:
F02M26/13; F02M21/04; F02M26/47
Foreign References:
| CN109826730A | 2019-05-31 | |||
| CN105673266A | 2016-06-15 | |||
| CN109707541A | 2019-05-03 | |||
| CN205559110U | 2016-09-07 | |||
| CN208474026U | 2019-02-05 | |||
| CN107061060A | 2017-08-18 | |||
| JPH11107796A | 1999-04-20 |
Other References:
See also references of EP 3851661A4
Attorney, Agent or Firm:
BEIJING CHEN QUAN INTELLECTUAL PROPERTY LAW FIRM (CN)
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