Engine Brake Reset Apparatus Reducing Starting Pressure
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Solution Overview
Problem
Engine brakes using decompressing face issues with high reset starting pressure and non-uniform contact during piston movement, leading to poor reset operation and inadequate braking performance, especially in downsized engines.
Innovation Solution
An apparatus for resetting engine brakes using decompressing, featuring a housing with a check plate, piston, and reset pin, where the rocker arm operates to discharge oil pressure, reducing the reset starting pressure and improving piston elevation by controlling oil flow through a communication port and outlet system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the engine brake uses decompressing to forcibly open the exhaust valve, then the braking effect is maximized, but the reset starting pressure becomes high and the reset operation deteriorates
Solution Approach 1:
The housing is divided into a first space for the piston and a second space for the reset pin, with a communication port connecting them. This segmentation allows independent control of oil pressure in each space, enabling the piston to maintain high pressure for braking while the reset pin can discharge oil to reduce pressure for resetting, thereby resolving the contradiction between braking effect and reset operation.
Solution Approach 2:
The reset pin acts as an intermediary component that mediates between the high-pressure state during braking and the low-pressure state during resetting. By providing a controlled oil discharge path through the communication port, the reset pin enables smooth pressure transition and uniform contact during piston movement, improving reset operation without compromising braking performance.
2Productivity
If the piston moves vertically in the socket brake, then the valve is forcibly opened, but non-uniform contact with the housing occurs during ascent and descent
Solution Approach 1:
The oil pressure control system provides feedback during piston movement. As the piston ascends and descends, the oil pressure changes are monitored and adjusted through the communication port, ensuring uniform contact between the piston and housing. This feedback mechanism maintains consistent pressure distribution, preventing non-uniform contact while preserving fast valve opening.
3Power
If the engine is downsized to improve output, then the engine brake performance becomes inadequate
Solution Approach 1:
The invention changes the pressure control parameters by introducing a communication port that allows independent pressure management in the piston space and reset pin space. This enables the system to maintain high oil pressure for effective braking in downsized engines, compensating for the reduced engine size and ensuring adequate braking performance without requiring a larger engine.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The apparatus enables rapid reset of engine brakes with reduced starting pressure, preventing valve and piston interference, and enhancing braking performance by efficiently discharging oil pressure and improving piston movement.
Implementation Method 1
a check plate configured to be elastically supported to an inside of the housing to control oil introduced into the housing
Implementation Method 2
a piston configured to be accommodated in the check plate and slid when the inside of the housing is filled with oil to discharge the oil
Implementation Method 3
a reset pin configured to be elevatably installed at one side of the housing to form a passage through which the oil is discharged from the housing to the outside
Data Source
AI summary
An apparatus for resetting an engine brake to be able to exhibit a braking force by opening an exhaust valve at the close of a compression stroke of an engine to prevent combustion includes a housing configured to introduced with pressurized oil from the engine brake and to discharge the oil to the outside depending on an operation of a rocker arm of the engine brake, a check plate configured to be elastically supported within an inside of the housing to control oil introduced into the housing, a piston configured to be accommodated in the check plate and slid when the inside of the housing is filled with oil to discharge the oil, and a reset pin configured to be elevatably installed at one side of the housing to form a passage through which the oil is discharged from the housing to the outside.