Variable Valve Timing With Only One Camshaft Actuator for a Single-Cylinder Engine

Gerlach, Andreas; Fritsch, Martin; Benecke, Sebastian; Rottengruber, Hermann; Leidhold, Roberto

doi:10.1109/tmech.2019.2928989

Cited by 8 publications

(3 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…By manipulating cam geometry and motion parameters, an array of complex motion modes can be achieved [3]. For example, in an internal combustion engine, a cam on the camshaft transforms rotational motion into the up and down movement of the valve through the valve rod and connecting rod, facilitating gas intake and exhaust [4]. In the field of industrial automation, modular cam-controlled automatic assembly equipment [5] ensures efficient and stable repetitive operations by regulating the trajectory and speed of robotic arms or other moving parts.…”

Section: Introduction 11 Practical Application Of Complex Cammentioning

confidence: 99%

Design and experiment of complex Trajectory Cam based on MATLAB

Zhang,

2023

Atlantis Highlights in Intelligent Systems

View full text Add to dashboard Cite

A cam design method is proposed in this study that utilizes mathematical modeling and MATLAB simulation analysis. The objective is to construct cam profiles that are suitable for complex trajectories with precision and efficiency. Initially, mathematical modeling is employed to determine the projected running trajectory. Subsequently, the corresponding cam contour is derived through MATLAB simulation analysis. To demonstrate the effectiveness of the proposed method, a carbon-free car navigating a complex path is chosen as an illustrative example for cam design. Experimental results confirm that the car successfully follows the predetermined path using the cam steering mechanism, with the walking trajectory closely aligning with the preset trajectory. This outcome substantiates the reliability of the cam design method.

show abstract

Section: Introduction 11 Practical Application Of Complex Cammentioning

confidence: 99%

Design and experiment of complex Trajectory Cam based on MATLAB

Zhang,

2023

Atlantis Highlights in Intelligent Systems

View full text Add to dashboard Cite

show abstract

“…The processor must complete these tasks simultaneously in a very short time. Several studies show the capability of performing tasks with another type of processor using variations of counter and register [6], dynamic mathematical model processor [11], field-programmable gate array (FPGA) [12][13][14], module controlled with dSpace MicroAutoBox [15], data acquisition control integrator with computer [16], low-cost microcontroller [17][18][19] or just using data logger [20].…”

Section: Introductionmentioning

confidence: 99%

Development of Electronic Valve Timing Control Unit for Single Piston Expander with Microcontroller

Ali

Zakaria

Mohamad

et al. 2022

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

An electronic valve timing control unit has been developed mainly for the internal combustion engine operation. This study aims to implement a similar technology into a single-piston expander (SPE) with readily available and low-cost microcontrollers. The study used an Arduino Mega 2560 and ESP32-WROOM microcontrollers to control the valve timing with the rotational input signal obtained from an absolute encoder. The SPE has been expected to run at the rotational speed of up to 2000 rpm. This setup was prepared to simulate the actual SPE operation using a direct current motor to drive the spindle connected to the encoder shaft to create a similar hardware testing and controlled environment. The study aims to identify the efficiency of the microcontroller’s performance with a variation of the valve’s opening and closing time. Results have shown that the clock rate of the microcontroller affects the performance of valve timing response. By increasing the clock rate, the microcontroller can control the valve at a higher speed.

show abstract

“…In addition, the authors of [13] proposed a new transmission scheme based on motor-driven valves. The crankshaft is not directly connected to the camshaft; instead, the rotary motor directly drives the camshaft to drive the rocker arm to control the valve.…”

Section: Introductionmentioning

confidence: 99%

Design and Analysis of a Fully Variable Valve Actuation System

Jiang

Liu

Peng³

et al. 2020

Energies

View full text Add to dashboard Cite

With the problem of environmental pollution and energy shortage becoming more and more serious, the fuel efficiency of automobile engines has attracted much attention, and variable valve technology is one of the important technologies to solve this problem. A novel fully variable valve actuation (FVVA) system based on a brushless direct current motor (BLDCM) is designed to achieve fully variable valve adjustment. The system uses a crank-moving guide rod mechanism to convert the rotary motion of the BLDCM into the linear motion of the valve. The fully variable valve system can realize real-time continuous adjustment of valve operating parameters through the motion control of BLDCM, including variable valve timing, variable valve opening duration, and variable lift. A BLDCM and a transmission mechanism for the FVVA system is designed in this paper. In order to better analyze the performance of the system, a dynamic model is established. Then, a three closed-loop control method is adopted to realize position control of the valve. Finally, a complete system model is established to verify the theory conclusions. The results show that the system can realize fully variable valve adjustment.

show abstract

Variable Valve Timing With Only One Camshaft Actuator for a Single-Cylinder Engine

Cited by 8 publications

References 17 publications

Design and experiment of complex Trajectory Cam based on MATLAB

Design and experiment of complex Trajectory Cam based on MATLAB

Development of Electronic Valve Timing Control Unit for Single Piston Expander with Microcontroller

Design and Analysis of a Fully Variable Valve Actuation System

Contact Info

Product

Resources

About