Experimental and numerical investigation on the heat transfer of an automotive engine’s turbocharger

Basir, Hamed; Gharehghani, Ayat; Ahmadi, Abolfazl; Mirsalim, S.M.; Rosen, Marc A.

doi:10.1177/0954407020987829

Cited by 5 publications

(2 citation statements)

References 27 publications

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“…Basir et al [14] used thermocouples and an infrared camera to study the temperature distribution of the TCR housing in engines. They found that the temperature of the bearing housing near the turbine housing is higher than the area adjacent to the compressor body.…”

Section: Introductionmentioning

confidence: 99%

Studying the Temperature Characteristics of Oil at the Outlet From the K27-145 Turbocharger Rotor Bearing

Гриценко¹,

Shepelev²,

Kaliyev³

2022

Tribol. Ind.

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Turbocharging is a promising solution for increasing the specific power of motor-and-tractor equipment, which allows increasing power up to 50%. At the same time, a significant growth of speed, load, and temperature modes leads to a significant increase in the number of failures and a decrease in reliability by 2-3 times. Theoretical and experimental studies established that the temperature of the bearing and oil at the turbocharger drain changes under the influence of the inlet oil temperature to the TCR bearing, the TCR rotor shaft speed, and the change in the oil pressure at the input to the TCR bearing. This allows setting the limits of the TCR bearing performance in extreme operating conditions. The installation of an autonomous TCR lubricating and braking device maintains the required reliability level and increases failure-free operation. The hydraulic accumulator installed in the lubrication system of the engine turbocharger regulars lubricates and cools the rotor bearings when the ICE crankshaft speed drops. The incorporation of a braking device reduces the rundown time of the rotor and thereby prevents oil starvation and dry friction of the rotor bearing. The combined use of the hydraulic accumulator and the braking device minimizes the risk of dry friction and accidental failure of the turbocharger. We proved that the braking device of the TCR rotor built into the intake system of an ICE with the calculated design parameters reduces the rotor rundown time by 30-35%. This reduces the dimensions and operating time of the hydraulic accumulator and simultaneously eliminates surges in the compressor section of the TCR and any breakage of its parts. In these conditions, it is relevant to develop independent systems to lubricate the TCR bearings and replenish them using built-in hydraulic accumulators during start-up, significant loads at minimum crankshaft speeds, and engine stalling.

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Section: Introductionmentioning

confidence: 99%

Studying the Temperature Characteristics of Oil at the Outlet From the K27-145 Turbocharger Rotor Bearing

Гриценко¹,

Shepelev²,

Kaliyev³

2022

Tribol. Ind.

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“…Turbine housing -a key part of the turbocharger -generates thermomechanical fatigue under the influence of high-temperature gas and engine vibrations. [1][2][3] Hence, the thermomechanical fatigue of turbochargers has become a concern in the design of turbochargers.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical investigation of the thermomechanical load on a turbine housing in a radial turbocharger

Chen

Zhang

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part D:

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The fatigue life of turbine housing is an important index to measure the reliability of a radial turbocharger. The increase in turbine inlet temperatures in the last few years has resulted in a decrease in the fatigue life of turbine housing. A simulation method and experimental verification are required to predict the life of a turbine housing in the early design and development process precisely. The temperature field distribution of the turbine housing is calculated using the steady-state bidirectional coupled conjugate heat transfer method. Next, the temperature field results are considered as the boundary for calculating the turbine housing temperature and thermomechanical strain, and then, the thermomechanical strain of the turbine housing is determined. Infrared and digital image correlations are used to measure the turbine housing surface temperature and total thermomechanical strain. Compared to the numerical solution, the maximum temperature RMS (Root Mean Square) error of the monitoring point in the monitoring area is only 3.5%; the maximum strain RMS error reached 11%. Experimental results of temperature field test and strain measurement test show that the testing temperature and total strain results are approximately equal to the solution of the numerical simulation. Based on the comparison between the numerical calculation and experimental results, the numerical simulation and test results were found to be in good agreement. The experimental and simulation results of this method can be used as the temperature and strain (stress) boundaries for subsequent thermomechanical fatigue (TMF) simulation analysis of the turbine housing.

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Explanation of the mechanisms of unsteady gas flow through the turbocharger seal system, including thermal and structural interactions

Novotný

Kudlacek

Vacula

2023

Propulsion and Power Research

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Experimental and numerical investigation on the heat transfer of an automotive engine’s turbocharger

Cited by 5 publications

References 27 publications

Studying the Temperature Characteristics of Oil at the Outlet From the K27-145 Turbocharger Rotor Bearing

Studying the Temperature Characteristics of Oil at the Outlet From the K27-145 Turbocharger Rotor Bearing

Experimental and numerical investigation of the thermomechanical load on a turbine housing in a radial turbocharger

Explanation of the mechanisms of unsteady gas flow through the turbocharger seal system, including thermal and structural interactions

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