Compression Release Engine Brake Socket Module Oil Exhaustion
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Solution Overview
Problem
Conventional compression release type engine brakes face issues with oil exhaustion in the socket module, leading to increased size due to external reset brackets and quality problems such as the brake piston detaching from the housing during assembly or transfer.
Innovation Solution
A socket module with a housing, brake piston, and reset member that automatically exhausts engine brake oil and includes a stopper to limit the brake piston's position, preventing detachment and using a check valve and reset spring to manage oil flow and valve operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the socket module is designed according to conventional art without internal oil exhaustion mechanism, then the structure is simpler, but the brake oil accumulates in the socket module causing valve lift displacement and potential contact between exhaust valve and engine piston
Solution Approach 1:
The reset member is nested inside the socket module housing, with the reset valve, reset spring, and push pin arrangement all contained within the existing socket module structure. This allows the oil exhaustion function to be integrated without adding external components, resolving the contradiction between reliability improvement and structural complexity.
Solution Approach 2:
The reset valve acts as an intermediary component that mediates between the brake oil pressure system and the exhaust valve control system. It selectively opens to allow brake oil to escape, thereby controlling the valve lift and preventing excessive opening without requiring complex external control mechanisms.
2Reliability
If an external reset bracket is added to exhaust brake oil, then the oil exhaustion function is achieved, but the overall size of the engine brake increases
Solution Approach 1:
The reset member functionality is merged with the existing socket module structure. The reset valve, reset spring, and housing form an integrated assembly that combines the oil exhaustion function with the valve control mechanism, eliminating the need for separate external reset brackets and reducing overall engine brake size.
Solution Approach 2:
The socket module housing serves multiple functions: it contains the brake piston, provides structural support, and houses the reset member mechanism for oil exhaustion. This multi-functionality reduces the need for additional dedicated components, thereby reducing overall size while maintaining the exhaust function.
3Ease of manufacture
If the socket module is designed without stopper, then the structure is simpler, but the brake piston may detach from the housing during transfer or assembly causing quality problems
Solution Approach 1:
The stopper is pre-installed in the housing to define the lower limit position of the brake piston before assembly is complete. This preliminary positioning action prevents the brake piston from detaching during transfer or assembly operations, ensuring quality without complicating the manufacturing process.
Solution Approach 2:
The stopper provides a mechanical stop that cushions against excessive downward movement of the brake piston. By providing this protective element in advance, the design prevents potential detachment issues without requiring complex retention mechanisms or complicated assembly procedures.
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 solution ensures consistent valve operation, prevents the brake valve from separating from the housing, and enhances product durability and performance by automatically exhausting oil and maintaining a constant valve lift.
Implementation Method 1
when the engine brake is operated, the brake piston moves downward to eliminate the gap between the exhaust rocker arm and the exhaust cam, thereby forcing the exhaust valve to be opened at the end of the compression stroke
Implementation Method 2
using a check valve and reset spring to manage oil flow and valve operation
Implementation Method 3
applies a stopper that limits the position of the brake valve, so that the brake valve can be prevented from being detached from the housing with a simple structure
Data Source
AI summary
A compression release type of engine brake socket module is provided between an exhaust rocker arm rotating with respect to a rocker arm shaft and a valve bridge connecting an exhaust valve of an engine. In particular the socket module incudes: a housing which includes an inlet through which brake oil is introduced, a brake piston mounting portion, and a reset member mounting portion communicating with the brake piston mounting portion; a brake piston that is provided to be movable in the brake piston mounting portion; a stopper disposed on one side of an inner space of the housing to limit a moving position of the brake piston; and a reset member that is provided in the reset member mounting portion, and that discharges the brake oil by selectively contacting a push pin coupled to an upper portion of a cylinder head.