Diesel Engine Cold Start Combustion Instability and Control Strategy

2001 ◽  
Author(s):  
Zhiping Han ◽  
Naeim Henein ◽  
Bogdan Nitu ◽  
Walter Bryzik
Keyword(s):  
Diesel Engine ◽  
Control Strategy ◽  
Combustion Instability ◽  
Cold Start ◽  
And Control

scholarly journals Simulation Model of Hybrid Shunting Locomotive

2020 ◽  
Vol 5 (3) ◽  
pp. 75-90
Author(s):  
Zdeněk Mašek ◽  
Václav Lenoch ◽  
Tomáš Lelek
Keyword(s):  
Diesel Engine ◽  
Simulation Model ◽  
Control Strategy ◽  
Lithium Batteries ◽  
Hybrid Drive ◽  
Energy Flows ◽  
Proper Size ◽  
And Control

The paper describes the simulation model of the hybrid shunting locomotive. The hybrid drive consists of the diesel engine supplemented with lithium batteries. The simulation model is created in order to analyse energy flows, determine influence of the component proper size and control strategy.

Development of control strategy for fast idling condition of diesel engine based on target torque

2021 ◽  
Vol 13 (12) ◽  
pp. 168781402110626
Author(s):  
Jiesong Jian ◽  
Xuedong Lin ◽  
Yuanchun Ren ◽  
Yingchao Zhang ◽  
Chun Shen ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Fuel Economy ◽  
Control Strategy ◽  
Cold Start ◽  
Maximum Speed ◽  
Fuel Saving ◽  
Time Saving ◽  
Warm Up

This article puts forward the concept of fast idling condition. The comparative experiments of idling and fast idling warming up engine show that: during cold start, the warm-up of fast idling condition whose maximum speed is 1350 r/min is the most fuel-efficient, fuel-saving about 4.5%, time-saving about 32.5%; at normal temperature, warming up engine of fast idling condition does not save fuel. The warm-up experiments of fast idling condition that accelerations are different in the descent phase show that when the engine is cold, the smaller the acceleration in the descent phase of fast idling condition is, the more time and fuel are saved; at normal temperature, the bigger the acceleration in the descent phase of fast idling condition is, the better the fuel economy is. Therefore, it is inferred that the engine should be warmed up under fast idling condition when the engine is cold and idling condition is used to warm up engine at normal temperature. To sum up, when the engine is cold, the engine should be warmed up under the fast idling condition whose maximum speed is 1350 r/min; at normal temperature, it should be warmed up in idling condition to save fuel.

Effects of cold start control strategy on cold start performance of the diesel engine based on a comprehensive preheat diesel engine model

2018 ◽  
Vol 210 ◽  
pp. 279-287 ◽  
Author(s):  
Yuanwang Deng ◽  
Huawei Liu ◽  
Xiaohuan Zhao ◽  
Jiaqiang E ◽  
Jianmei Chen
Keyword(s):  
Diesel Engine ◽  
Control Strategy ◽  
Cold Start ◽  
Engine Model

Dry chip feedrate control using online chip moisture

TAPPI Journal ◽  
2018 ◽  
Vol 17 (05) ◽  
pp. 295-305
Author(s):  
Wesley Gilbert ◽  
Ivan Trush ◽  
Bruce Allison ◽  
Randy Reimer ◽  
Howard Mason
Keyword(s):  
Production Rate ◽  
Control Strategy ◽  
Rate Control ◽  
Near Infrared ◽  
Dry Mass ◽  
The Other ◽  
Process Variability ◽  
Moisture Sensor ◽  
Feedback Control Strategy ◽  
And Control

Normal practice in continuous digester operation is to set the production rate through the chip meter speed. This speed is seldom, if ever, adjusted except to change production, and most of the other digester inputs are ratioed to it. The inherent assumption is that constant chip meter speed equates to constant dry mass flow of chips. This is seldom, if ever, true. As a result, the actual production rate, effective alkali (EA)-to-wood and liquor-to-wood ratios may vary substantially from assumed values. This increases process variability and decreases profits. In this report, a new continuous digester production rate control strategy is developed that addresses this shortcoming. A new noncontacting near infrared–based chip moisture sensor is combined with the existing weightometer signal to estimate the actual dry chip mass feedrate entering the digester. The estimated feedrate is then used to implement a novel feedback control strategy that adjusts the chip meter speed to maintain the dry chip feedrate at the target value. The report details the results of applying the new measurements and control strategy to a dual vessel continuous digester.

A power management and control strategy with grid-ancillary services for a microgrid based on DC Bus

2014 ◽  
Vol 9 (4) ◽  
pp. 792 ◽  
Author(s):  
Anna Pinnarelli ◽  
Giuseppe Barone ◽  
Giovanni Brusco ◽  
Alessandro Burgio ◽  
Daniele Menniti ◽  
...  
Keyword(s):  
Power Management ◽  
Control Strategy ◽  
Ancillary Services ◽  
Dc Bus ◽  
And Control
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