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Every so often, I dig through the patent filings of various manufacturers to see if I can spot anything interesting coming down the pipeline. Yesterday, I found something very interesting. Published on June 2, 2020, Mitsubishi patented a control system for a 4 cylinder engine with a hybrid system, describing the function of the specifics of the electric supercharger. For a TL;DR, I will be linking the patent pdf at the bottom of this post, so you can skip all of my synapsis and read it yourself if you so choose.
There has been rumors since mid 2019 that the Evo XI is in production and maybe would have a hybrid system.
I am here to confirm that it in fact, does have a hybrid system. What's more, it's using an electric supercharger to compress intake air while the turbocharger spools, making the Evolution XI a twin charged engine.
As far as I am aware, I am the first to come across this. As there are zero news articles about this patent. Here is the patent diagram of the new engine.
Features of this engine include, but are not limited to (All pulled from the claims and descriptions of diagrams in the patent); -a dynamo-electric machine configured to generate electric power by rotation of the engine
-an electric supercharger including an electric compressor disposed in the intake passage and configured to supercharge intake air into the combustion chamber by the electric power stored in the battery
-a mechanical supercharger including an exhaust turbine disposed in the exhaust passage and configured to be driven by exhaust gas in the exhaust passage (A turbo, in laymans terms.)
-further comprising an operating state controller configured to control a revolving speed of the engine and a load of the engine with reference to an equi-output curve where an output of the engine does not change, while the ratio between the supercharging pressure by the electric supercharger and the supercharging pressure by the mechanical supercharger is changing.(Determining which forced induction method to use depending on engine RPM)
-In recent years, electronically controlled wastegate valves which are selectively opened and closed by an electric motor are also used
-Since large electric power is required to drive an electric supercharger, it is preferable to power such an electric supercharger using regenerative power generated while the vehicle on which the engine having the supercharger is mounted is decelerating.
As an aside, while writing this post I decided to check up on Mistu's trademark registration. The "Lancer" Trademark was filed in 2003 and kept current until 2016. There hasn't been a NEW filing.. Until March 2020, with a priority date of February 21, 2020
Last edited by Seleckt; Jun 10, 2020 at 05:08 PM.
Reason: Link to trademark dies after a few minutes. Screenshot included instead.
Every so often, I dig through the patent filings of various manufacturers to see if I can spot anything interesting coming down the pipeline. Yesterday, I found something very interesting. Published on June 2, 2020, Mitsubishi patented a control system for a 4 cylinder engine with a hybrid system, describing the function of the specifics of the electric supercharger. For a TL;DR, I will be linking the patent pdf at the bottom of this post, so you can skip all of my synapsis and read it yourself if you so choose.
There has been rumors since mid 2019 that the Evo XI is in production and maybe would have a hybrid system.
I am here to confirm that it in fact, does have a hybrid system. What's more, it's using an electric supercharger to compress intake air while the turbocharger spools, making the Evolution XI a twin charged engine.
As far as I am aware, I am the first to come across this. As there are zero news articles about this patent. Here is the patent diagram of the new engine.
Features of this engine include, but are not limited to (All pulled from the claims and descriptions of diagrams in the patent); -a dynamo-electric machine configured to generate electric power by rotation of the engine
-an electric supercharger including an electric compressor disposed in the intake passage and configured to supercharge intake air into the combustion chamber by the electric power stored in the battery
-a mechanical supercharger including an exhaust turbine disposed in the exhaust passage and configured to be driven by exhaust gas in the exhaust passage (A turbo, in laymans terms.)
-further comprising an operating state controller configured to control a revolving speed of the engine and a load of the engine with reference to an equi-output curve where an output of the engine does not change, while the ratio between the supercharging pressure by the electric supercharger and the supercharging pressure by the mechanical supercharger is changing.(Determining which forced induction method to use depending on engine RPM)
-In recent years, electronically controlled wastegate valves which are selectively opened and closed by an electric motor are also used
-Since large electric power is required to drive an electric supercharger, it is preferable to power such an electric supercharger using regenerative power generated while the vehicle on which the engine having the supercharger is mounted is decelerating.
Cool find! Good to see that this technology is being used in more platforms. Aftermarket companies have started making universal electric supercharging kits so I anticipate the tech being more commonplace in the years to come.
