Adjustable turbocharger wastegate controller suitable for after-market installation
OwnerWilliam Dale Heathinventor
Life of this patent
Estimating the term…
Abstract
An adjustable turbocharger wastegate controller suitable for after-market installation is disclosed. The invention makes use of the existing factory wastegate mechanism to form a fully adjustable turbine-inlet pressure relief. The factory wastegate valve assembly and the wastegate lever-arm connected to the wastegate shaft are utilized. The invention extends the lever-arm, and applies seating pressure to the valve with a spring assembly using a substantially lower spring-rate than the factory assembly. The spring loading is adjustable over a very wide range, and improved pressure regulation is achieved.
Claims13
A turbocharger wastegate controller comprising:
- a spring;
- a waste gate valve;
- an adjusting nut for controlling the compression in the spring when the wastegate valve is seated;
- a control arm further comprising:
- a first end;
- and
- a second end;
- wherein the first end has a means for rotatably attaching to a lever arm fixed to a wastegate shaft;
- and
- the second end comprises a threaded portion which engages the threads on the adjusting nut;
- wherein the control arm passes through a through hole in a mounting bracket;
- wherein the spring is mounted over the second end of the control arm with a means for holding the spring substantially coaxially with the long axis of the control arm;
- and
- wherein the adjusting nut is seated against a spring cap, and turning the adjustment nut varies the length of the control arm available between the spring cap and the mounting bracket.
A turbocharger wastegate controller suitable for after-market installation and making use of an existing wastegate valve, wastegate shaft, and a wastegate lever arm comprising:
- a lever-arm extension attached to the wastegate lever-arm such that the lever-arm extension rotates with the wastegate lever-arm in response to movement of the existing wastegate valve;
- a control arm having a first end rotatably attached to the lever-arm extension and a second end which is threaded;
- a bracket with a through-hole for the control arm to pass through and a means for attaching the bracket to a turbocharger housing;
- an inner spring cap mounted over the second end of the control arm;
- a spring comprising a first and second end wherein the spring is mounted over the second end of the control arm such that the first end of the spring is seated against the inner spring cap;
- an outer spring cap mounted over the second end of the control arm and seated against the second end of the spring;
- and
- an adjusting nut fitting the threads on the second end of the control arm and seated against the outer spring cap,
- wherein the compression in the spring is adjusted by turning the adjusting nut.
A turbocharger wastegate controller suitable for after-market installation and making use of an existing wastegate valve, a wastegate shaft, and a wastegate lever arm comprising:
- a lever-arm extension attached to the wastegate lever-arm such that the lever-arm extension rotates with the wastegate lever-arm in response to movement of the existing wastegate valve;
- a control arm having a first end rotatably attached to the lever-arm extension and a second end which is threaded;
- a bracket with a through-hole for the control arm and a means for attaching the bracket to a turbocharger housing, wherein the bracket has a means for capturing the end of a spring such that the spring is held substantially coaxially with the control arm;
- the spring comprising a first and second end:
- wherein the spring is mounted over the second end of the control arm such that the first end of the spring is seated against the bracket,
- an outer spring cap mounted over the second end of the control arm and seated against the second end of the spring;
- and
- an adjusting nut fitting the threads on the second end of the control arm and seated against the outer spring cap,
- wherein the compression in the spring is adjusted by turning the adjusting nut.
Dependencies are inferred from the claim text.