System and method for control of compression in internal combustion engine via compression ratio and elastic piston
US-11428174-B2 · Aug 30, 2022 · US
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Reciprocating - piston engines (F02B75/04 takes precedence; with resiliently-urged auxiliary piston in pre-combustion chamber F02B19/06)
Reciprocating - piston engines (F02B75/04 takes precedence; with resiliently-urged auxiliary piston in pre-combustion chamber F02B19/06) · Cooperative Patent Classification (CPC)
Engines, pumps, lighting, heating, and mechanical systems.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | F02B75/38 |
| Official title | Reciprocating - piston engines (F02B75/04 takes precedence; with resiliently-urged auxiliary piston in pre-combustion chamber F02B19/06) |
| Display label | Reciprocating - piston engines (F02B75/04 takes precedence; with resiliently-urged auxiliary piston in pre-combustion chamber F02B19/06) |
| Total patents | 5 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2017 | 1 |
| 2018 | 1 |
| 2019 | 1 |
| 2021 | 1 |
| 2022 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
System and method for control of compression in internal combustion engine via compression ratio and elastic piston
US-2021254563-A1 · Aug 19, 2021 · US
Controlling variable compression ratio with a pressure-reactive piston
US-10273927-B2 · Apr 30, 2019 · US
Controlling variable compression ratio with a pressure-reactive piston
US-2018252197-A1 · Sep 6, 2018 · US
Piston
US-9546733-B2 · Jan 17, 2017 · US