Engine Cooling Module Development Using Air Flow Management Techniques

The engine cooling module consists of condenser, radiator and fan (CRFM), which has long been recognized as a main source of sound and vibration in the automotive industry. As the engine becomes increasingly compact and powerful, customers gradually have higher expectations for automobile NVH performance than ever before. Thus the reduction of noise and vibration induced by CRFM becomes critical, which can greatly influence overall NVH performance. Combined with experimental and numerical methods, this paper focuses on the identification and optimization of steering wheel (SW) vibration induced by CRFM for a vehicle with V6 engine while engine idling. The numerical model established in this paper, based on Matlab and taking chassis vibration into account, can predict and optimize the vibration of CRFM under specific working condition with the help of energy decoupling and Newmark-Beta methodology. The optimization design of CRFM mainly involves the stiffness, position and angle of isolators. The numerical simulation results are validated experimentally, which can help further design of CRFM.

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Vortical flow management techniques

Progress in Aerospace Sciences ◽

10.1016/0376-0421(87)90007-8 ◽

1987 ◽

Vol 24 (3) ◽

pp. 173-224 ◽

Cited By ~ 45

Author(s):

Dhanvada M. Rao ◽

James F. Campbell

Keyword(s):

Vortical Flow ◽

Flow Management ◽

Management Techniques

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Energy and Distribution Analysis on Engine Bench

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.472.301 ◽

2014 ◽

Vol 472 ◽

pp. 301-305

Author(s):

He Chang ◽

Xiu Min Yu ◽

Xian Qu ◽

Wen Chao Zhang ◽

Pin Sun ◽

...

Keyword(s):

Control System ◽

Energy Flow ◽

Engine Speed ◽

Working Condition ◽

Cooling System ◽

Distribution Analysis ◽

Balance Test ◽

Engine Cooling ◽

Cooling Module ◽

Combustion Flow

Engine is carried the test on the thermal balance test and the drag test in the vehicle working condition to analysis the distribution of energy from combustion. The heat of coolant that combustion flow into the cooling system in different temperature is not the same. The results show that the engine heat comes into the cooling system ranging minimum at 3000-4000r/min, the effective power output accounts for the total energy up to 25% at full load reaching the maximum. Based on the data, it is established the control system of engine cooling module that can be controlled by the engine speed, torque and power, when the ECU reads the signal to forecast the combustion energy flow to the cooling system in the target vehicle working conditions establish the cooling module heat release control system.

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EXPERIMENTAL DETERMINATION OF THE AIR FLOW VELOCITY DISTRIBUTION IN FRONT OF THE RADIATOR OF A CAR COOLING SYSTEM

Intelligence Innovations Investment ◽

10.25198/2077-7175-2021-3-81 ◽

2021 ◽

pp. 81-90

Author(s):

N.V. Kholshev ◽

◽

D.N. Konovalov ◽

Yu.E. Glazkov ◽

◽

...

Keyword(s):

Flow Velocity ◽

Research Methodology ◽

Internal Combustion Engines ◽

Supply Voltage ◽

Cooling System ◽

Air Flow ◽

Response Surfaces ◽

Engine Cooling ◽

Air Flow Velocity ◽

Flow Velocities

The growth of environmental and economic requirements for the performance properties of internal combustion engines makes it necessary to constantly improve them. One of the ways to improve the design of engines is to improve the performance of its cooling system, which determines the stability of its thermal regime, on which the engine life and performance indicators directly depend. To increase the efficiency of the cooling system, you can increase the speed of the air flow flowing through the radiator and created by the fan. Flow velocity can be increased by reducing the aerodynamic drag in the air path of the engine cooling system. To do this, you need to know the actual distribution of air flow velocities in front of the radiator at its various points. The purpose of this work was to experimentally determine the air flow rates in front of the radiator at its various points at different values of the supply voltage. In accordance with the developed research methodology, a laboratory installation was developed that allows you to place the radiator assembly with the fan unit and determine the speed of the air flow in front of it with reference to its specific points, measure the speed of rotation of the fan blades and the power consumed by its engine. As a result of experimental studies, approximating response surfaces were constructed that describe the distribution of air flow velocities in front of the radiator at different values of the supply voltage, and the influence of the supply voltage values on the change in the amount of power consumed by the fan motor was established. As a result of the analysis of the data obtained, it was found that a slight decrease in voltage does not reduce the blowing area, but somewhat reduces the air flow rate, which can negatively affect the cooling of the engine itself by the air flow coming out of the fan. The scientific novelty of this work is the experimentally obtained distributions of the values of the air flow velocity in front of the radiator and the research methodology. The research results can be used to improve the efficiency of the fan installation of the engine cooling system. The direction of further research is to study the influence of the resistances at the outlet of the radiator fan casing on the distribution pattern and the air flow velocity.

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