scholarly journals Development of a New-Concept Supercharged Single-Cylinder Engine for Race Car

Energies ◽  
2020 ◽  
Vol 13 (14) ◽  
pp. 3694
Author(s):  
Chuanxue Song ◽  
Gangpu Yu ◽  
Shuai Yang ◽  
Ruoli Yang ◽  
Yi Sun ◽  
...  
Keyword(s):  
Integrated Circuit ◽  
Performance Test ◽  
Test Bench ◽  
Dynamic Performance ◽  
Engine Performance ◽  
Exhaust System ◽  
Bench Test ◽  
Single Cylinder ◽  
Race Car ◽  
Single Cylinder Engine

This article summarises the development and experience of the Formula Student race car engine from 2018. According to the technical rules of Formula Student after the change in 2017, this engine adopts a new design concept, employs a 690-mL single-cylinder engine as the base, and applies ‘response enhancement technology’ with supercharging as the core to achieve a high-power output, a wide high-torque range and an excellent response capability. During the development, various studies on the dynamic performance of the vehicle and the engine were conducted, including vehicle dynamics analysis and track simulation, parameter matching of the supercharger and the engine, control strategy design, and the intake and exhaust system design. This research builds a supercharger air flow and efficiency test bench and an engine performance test bench. Test results show that the developed engine can output 122% of the original power and 120% of the original torque with a 20-mm diameter intake restrictor. Compared with previous generation race cars with a turbocharged four-cylinder engine, the new race car‘s 0–100 km/h acceleration time is shortened by 0.2 s, the torque response time under typical condition is shortened by 80%, and the lap time of the integrated circuit is reduced by 7%.

scholarly journals Prototype of Disc Brake Dynamometer

2020 ◽  
Author(s):  
Pakkip Kraisoda
Keyword(s):  
Thermal Efficiency ◽  
Performance Test ◽  
Gasoline Engine ◽  
Engine Performance ◽  
Performance Standard ◽  
Engine Torque ◽  
Single Cylinder ◽  
Disk Brake ◽  
Single Cylinder Engine ◽  
Brake Dynamometer

Abstract This paper presents the design and test of prototype of Disk Brake Dynamometer of Single-cylinder engine performance standard Brake horsepower with water using the Honda GX-200 four-stroke 196 cm3 gasoline engine, 1-cylinder gasohol 95 fuel. The experiment result showed that the Prototype of Disk brake Dynamometer maximum engine torque was 11.58 N m at 2500 rpm. The maximum power of engine was 3.29 kW at 3000 rpm and maximum thermal efficiency of engine brake was 25.36% at 2500 rpm. When being compared the performance of a standard single-cylinder engine performance test with the all-purpose gasoline engine Honda GX-200 1-stroke 4-stroke 196 cm3 gasohol 95, it was found that Maximum engine torque was less than 5.39%, the maximum engine power was higher than 2.49%, the maximum fuel consumption of the engine was higher than 10% and the maximum thermal efficiency of the engine was higher than 2.39%.

Sound & vibration control for a single-cylinder gasoline engine based on parameter optimization of timing-chain system

2017 ◽  
Vol 232 (13) ◽  
pp. 1815-1827
Author(s):  
Xianjun Hou ◽  
Songze Du ◽  
Chihua Lu ◽  
Zien Liu ◽  
Hao Zheng ◽  
...  
Keyword(s):  
Optimization Design ◽  
Gasoline Engine ◽  
Subjective Evaluation ◽  
Dynamic Performance ◽  
Transverse Displacement ◽  
Single Cylinder ◽  
Chain System ◽  
Design Scheme ◽  
Single Cylinder Engine ◽  
Timing System

In order to promote the idling noise quality of a single-cylinder gasoline engine, this paper addresses sound source identification and noise control research. The noise was identified by the application of subjective evaluation, acoustic spectrum and sound intensity analysis. It was found that the noise was caused by the anomalous dynamic performance of the timing system under idling conditions. Furthermore, sound and vibration characteristics of timing system were improved by design methodology research of key components. A multi-body dynamic model was established to characterize dynamic characteristics of the timing system under idling conditions. The key factor of producing noise was that the fluctuation of contact force between the chain and guide and transverse displacement of the chain were much higher than those of the allowable design limit. For the lowest design alternation and manufacturing costs, the work analyzed six timing system improvement schemes obtained by cross combination of tensioner blade line and guide strip radian parameters. After that, the optimal design scheme which could improve dynamic performance parameters of the timing system was derived. The design scheme was conducted with a acoustic test of engine to derive the following results. The noise level of a single-cylinder engine under idling conditions decreased by 3 dB(A). The abnormal noise of the original engine was eliminated under subjective evaluation. The sound quality under other working conditions had no apparent deterioration. Research shows that guide and tensioner blade line optimization design could improve dynamic performance of the timing chain system to eliminate abnormal noise, thereby significantly improving the acoustic characteristic of a single-cylinder engine.

scholarly journals Experimental analysis of absorption refrigeration system driven by waste heat of diesel engine exhaust

2019 ◽  
Vol 23 (1) ◽  
pp. 149-157
Author(s):  
Mukul Kumar ◽  
Randip Das
Keyword(s):  
Diesel Engine ◽  
Waste Heat ◽  
Combustion Engine ◽  
Engine Performance ◽  
Exhaust System ◽  
Bench Test ◽  
Exhaust Gas ◽  
Absorption Refrigeration ◽  
Refrigeration System ◽  
Absorption Refrigeration System

This work presents an experimental study of an ammonia-water absorption refrigeration system using the exhaust of an internal combustion engine as energy source. The exhaust gas energy availability, the performance of the absorption refrigeration system and the engine performance are evaluated. A commercial turbocharged Diesel engine has been tested in a bench test dynamometer, with the absorption refrigeration system adapted to the exhaust system. The maximum COP obtained from the refrigeration system is 0.136 and it has been shown that heat energy available with exhaust gas is capable of producing sufficient cooling capacity for air conditioning the vehicle without requiring any energy input from the engine.

Performance Evaluation of Low Heat Rejection Engines

1994 ◽  
Vol 116 (4) ◽  
pp. 758-764 ◽  
Author(s):  
X. Sun ◽  
W. G. Wang ◽  
R. M. Bata ◽  
X. Gao
Keyword(s):  
Fuel Injection ◽  
Direct Injection ◽  
Combustion Process ◽  
Engine Performance ◽  
Injection System ◽  
Fuel Injection System ◽  
Heat Rejection ◽  
Single Cylinder ◽  
Single Cylinder Engine ◽  
Low Heat Rejection Engine

Improving the performance of the Chinese B135 six-cylinder direct injection turbocharged and turbocompounded Low Heat Rejection Engine (LHRE) was based on experimental and analytical studies. The studies were primarily applied on a B1135 single-cylinder LHR engine and a conventional water-cooled B1135 single cylinder engine. Performance of the B1135 LHRE was worse than that of the conventional B1135 due to a deterioration in the combustion process of the B1135 LHRE. The combustion process was improved and the fuel injection system was redesigned and applied to the B135 six-cylinder LHRE. The new design improved the performance of the LHRE and better fuel economy was realized by the thermal energy recovered from the exhaust gases by the turbocompounding system.

Validation of a New TVD Scheme Against Measured Pressure Waves in the Inlet and Exhaust System of a Single Cylinder Engine

1998 ◽  
Vol 122 (4) ◽  
pp. 533-540 ◽  
Author(s):  
M. Vandevoorde ◽  
R. Sierens ◽  
E. Dick
Keyword(s):  
Steady State ◽  
Mass Flow ◽  
Exhaust System ◽  
Valve Lift ◽  
Tvd Scheme ◽  
Pressure Waves ◽  
Exhaust Pipe ◽  
Single Cylinder ◽  
Single Cylinder Engine ◽  
Loss Coefficients

Recently a new TVD scheme was presented by the authors and a comparison was made with other algorithms for two engine related test cases (the shock tube and the tapered pipe). It was shown that the new scheme combines high accuracy with exact conservation of the mass flow, even in tapered pipes. In this paper the pressure waves in the inlet and exhaust system of a single cylinder engine are measured and compared to calculations with the new algorithm. The comparison is made under motoring and firing conditions of the engine with two different external mixture formation systems (different fuels: gasoline and methane). Modifications on intake and exhaust pipe configuration clearly show their influence on the pressure wave development. The importance of the loss coefficients for the flow through the inlet and exhaust valves (mass flow coefficient) is demonstrated. A test rig has been built to obtain these coefficients under steady-state conditions as a function of valve lift and mass flow rate. It is shown that for this engine configuration the measured steady-state loss coefficients are not reliable at low valve lifts. This can be explained by the influence of the Reynolds number and the appearance of a transition zone. For all mentioned comparisons the agreement is excellent. The next phase will be to evaluate the code for multi-cylinder engines under atmospheric and turbo-charged conditions. [S0742-4795(00)00204-0]

Experimental Study and Analysis of Lubricants Dispersed With Nanodiamond Particles on Diesel Engine

2014 ◽  
Vol 5 (4) ◽  
Author(s):  
Hao Liu ◽  
Minli Bai ◽  
Jizu Lv ◽  
Liang Zhang ◽  
Peng Wang ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Thermal Conduction ◽  
Dynamic Performance ◽  
Engine Performance ◽  
Friction Reduction ◽  
Bench Test ◽  
Friction Machine ◽  
Transmission Electron ◽  
Antiwear Properties ◽  
Desirable Effect

Limitations in energy crisis and environment protection promote the development of engine lubricants. By friction machine and AVL diesel engine bench, the present investigation studies the tribological properties and dynamic performance of diesel engine with lubricants of commercial quality dispersed with different mass concentrations of nanodiamond particles. Reverse dragging process tests and mapping characteristics tests were brought in the bench test. Additionally, investigations were conducted using viscometer, thermal conductivity meter, scanning electron microscopy (SEM), and transmission electron microscope (TEM) to interpret the possible influence mechanisms of tribology and thermal conduction with nanodiamond particles. The friction machine experimental results show that lubricants dispersed with nanodiamond particles exhibit good friction-reduction and antiwear properties. The engine bench tests indicate that it has a desirable effect on engine performance, decreasing the mechanical loss while increasing fuel economy.

scholarly journals Comparative Analysis on Performance Emission Test of Single Cylinder Engine and Multi Cylinder Engine

2020 ◽  
Vol 6 (11) ◽  
pp. 265-273
Author(s):  
Yuanyuan Shi ◽  
Xiaoxiao Niu ◽  
Xiangchen Zhang ◽  
Zhilei Wang
Keyword(s):  
Comparative Analysis ◽  
Diesel Engine ◽  
Working Conditions ◽  
Performance Test ◽  
Simple Structure ◽  
Emission Performance ◽  
Single Cylinder ◽  
Single Cylinder Engine ◽  
The Difference ◽  
Important Significance

In the research and test of diesel engine, because the performance test of multi cylinder engine with different configuration needs to be replaced, and there is a certain risk in the first test, while the single cylinder engine is more suitable for the research and test of different configurations because of its simple structure and convenient replacement of components. Therefore, by comparing the differences of combustion state between single cylinder engine and multi cylinder engine with the same configuration, the change law of performance characteristics of single cylinder engine and multi cylinder engine under different working conditions is confirmed. By analyzing the difference of emission performance of single cylinder engine with different configuration, the emission performance of multi cylinder engine under different configuration is predicted. The research in this paper has important significance for further research and test of diesel engine.

Sign in / Sign up

Export Citation Format

Share Document